impenetrableadj.

/ɪmˈpɛnɪtrəb(ə)l/

Forms: Also Middle English inp-, 1500s–1600s impenitrable.

Etymology: < French impénétrable (14th cent., J. de Vignay), < Latin impenetrābilis , < im- (im- prefix²) + penetrābilis penetrable adj. and n.

Not penetrable.

1. That cannot be penetrated, pierced, or entered; impossible to get into or through. Const. to, by.

ΘΚΠ

the world > movement > motion in a certain direction > movement over, across, through, or past > [adjective] > through > that may be passed through > not

impenetrablea1464

impervious1615

impervial1618

unthroughfaresome1674

unpermeable1756

unthoroughfaresome1868

the world > movement > motion in a certain direction > going or coming in > [adjective] > penetrating > able to be penetrated > not

unpenetrablec1425

impenetrablea1464

unpierceablec1480

pierceless1755

a1464 J. Capgrave Abbreuiacion of Cron. (Cambr. Gg.4.12) (1983) 105 Þe basnet was strong and inpenetrabel.

1585 T. Washington tr. N. de Nicolay Nauigations Turkie iv. iii. 115 b They had on their heads bourgonets, strong and impenetrable.

1603 M. Drayton Barrons Wars vi. lxix. 149 The sorrowes that she vttereth are such, Able to wound th' impenitrabl'st eares.

1667 J. Milton Paradise Lost ix. 1086 Woods impenetrable To Starr or Sun-light.

1687 London Gaz. No. 2251/4 His Hull..not being impenetrable to our great Shot.

1794 S. Williams Nat. & Civil Hist. Vermont 98 Impenetrable to the rain.

1814 W. Wordsworth Excursion ii. 88 The hills Lay shrouded in impenetrable mist.

1832 W. Macgillivray Trav. & Researches A. von Humboldt xxv. 383 A kind of clay impenetrable by the roots of herbaceous plants.

1880 S. Haughton Six Lect. Physical Geogr. v. 229 One impenetrable forest.

2. transferred and figurative. Whose nature, meaning, etc. cannot be penetrated or discerned; inscrutable; unfathomable.

a. Of things.

ΘΚΠ

the mind > mental capacity > intelligibility > unintelligibility > [adjective]

uncouthc897

unnimlyc1225

incomprehensiblea1340

unsearchablec1384

unknowable?c1400

investigablea1425

uncomprehensiblea1425

unthinkablec1445

imperscrutablec1450

inscrutablec1450

inopinable?a1475

incomprenable1502

unspectable?1504

incogitablec1522

uncogitable1529

impenetrable1531

inimaginable1534

inexplicable1555

unsensible1555

unscrutable1562

unfashionable1563

unpenetrable1581

unexcogitable1592

ineffable1598

inexcogitable1599

indivinable1603

ininvestigable1604

incapable1605

searchless?1606

uncomprehensive1609

unconceivable1611

undivinable1611

unimaginable1611

unexplicable1615

unintelligible1616

unapprehensible?1617

unfathomable1617

imprehensible1622

ununderstandablea1631

indeprehensible1633

indiscernible1635

inscrute1639

inapprehensiblea1641

indiscoverable1640

unexaminable1641

impervestigable1643

fathomless1645

inconceivable1646

indeterminable1646

inexplorable1646

insearchable1647

incomprehended1652

comprehendlessa1654

incomprehensive1656

untraceable1661

uninvestigablea1677

unintelligent1683

incognoscible1691

thought-transcendinga1711

uncognizable1720

acataleptic1727

undescriptive1744

elusive1751

impalpable1781

inaccessible1796

unconjecturable1806

uncognoscible1821

unascertainable1827

unfixable1831

unguessable1832

unrealizable1832

unsurveyable1833

hard-shelled1835

unintellective1837

undeemed1845

graspless1849

unconjectured1850

incognizable1852

ungraspable1853

unreadable1853

super-cerebral1854

elusory1856

trans-conscious1865

intangible1880

uncatchable1892

unspelt1892

unplumbable1895

unknowledgeable1920

indiscutable1933

1531 T. Elyot Bk. named Gouernour i. xxiii. sig. Lvi^v Were the thing neuer so difficile (or as who saythe) impenitrable.

1692 tr. C. de Saint-Évremond Misc. Ess. 285 Nothing is more impenetrable than its [sc. the soul's] Nature, its Original, and its Duration.

a1704 T. Brown Declam. Praise Poverty (rev. ed.) in Wks. (1730) I. 93 The legerdemain must be clean and the Conveyance impenetrable to the eye of the people.

1823 J. Lingard Hist. Eng. VI. 257 That the intention of proceeding to judgment might be kept an impenetrable secret.

1866 R. W. Dale Disc. Special Occasions vi. 188 Every article of it ends in impenetrable mystery.

b. Of persons, their appearance, actions, etc.

ΚΠ

1718 Free-thinker No. 75. 2 A long impenetrable Dissimulation.

1800 E. Hervey Mourtray Family II. 154 She watched his countenance whilst she spoke, but it was impenetrable.

1801 M. Edgeworth Forester in Moral Tales I. 157 He was..impenetrable on this subject.

1882 ‘Ouida’ In Maremma I. 70 She being a close and resolute woman, was impenetrable to the curiosity of her neighbours.

absolute as noun.1811 Henry & Isabella II. 73 I hope you bring me some consolation from the fair impenetrable.

3. Impervious to intellectual or moral influences, impressions, or ideas.

ΘΚΠ

the mind > emotion > absence of emotion > [adjective] > lacking emotional sensibility

unfeelingc1000

mis-feelinga1382

stonishc1450

unpainfulc1450

obtuse1509

sprightlessa1522

insensate1553

senseless1560

soulless1568

dull-esprited1591

impassible1592

bluntie1598

impenetrable1600

stockish1600

stolidc1600

incapable1601

stupid1605

tasteless1605

unsensitive1610

unexalted1611

insensible1617

unsensible1619

languid1622

immovable1639

dead-hearted1642

sterile1642

resupine1643

unaffectionate1645

iron-bound1648

resentlessa1649

torpid1656

torpulent1657

impassive1699

unreceptive1722

hebete1743

apathetic1744

stubbed1744

gustless1766

unresponsive1768

unsusceptible1779

tideless-blooded1786

unaffectioned1788

inaccessible1796

hebetudinous1820

unimpressible1828

insensitive1834

apathetical1835

non-sensitive1836

blunt-hearted1845

irreceptive1846

unreceptant1846

unimpressionable1847

anaesthetic1860

insentient1860

hard (also tough, sharp) as nails1862

unsqueamish1893

tone-deaf1894

unget-at-able1897

facty1901

zombie1937

pegamoid1957

1600 W. Shakespeare Merchant of Venice iii. iii. 18 It is the most impenitrable curre that euer kept with men.

1601 J. Marston et al. Iacke Drums Entertainm. iv. sig. G4^v Looke, on my knees I creepe, Be not impenetrable, beautious youth.

1785 W. Cowper Task vi. 505 ‘And dost thou dream’, the impenetrable man Exclaimed, ‘that me the lullabies of age..Can cheat?’

1865 M. Arnold Ess. Crit. v. 170 Aristocracies are, as such, naturally impenetrable by ideas.

4. Physics. Possessing the quality of impenetrability (see impenetrability n. 2).

ΘΚΠ

the world > matter > physics > [adjective] > unable to occupy same space and time

impenetrable1666

1666 R. Boyle Origine Formes & Qualities 3 There is one..Universal Matter common to all Bodies, by which I mean a Substance extended, divisible and impenetrable.

1717 S. Clarke tr. G. W. Leibniz in Papers between Leibnitz & Clarke 207 Some have fancied, that Man..became Solid, Opake, and Impenetrable by his Fall.

1829 Nat. Philos. (Libr. Useful Knowl.) I. Pneumatics ii. §7. 2 Air is impenetrable.

This entry has not yet been fully updated (first published 1899; most recently modified version published online June 2021).

单词	impenetrable
释义	impenetrableadj. /ɪmˈpɛnɪtrəb(ə)l/ Forms: Also Middle English inp-, 1500s–1600s impenitrable. Etymology: < French impénétrable (14th cent., J. de Vignay), < Latin impenetrābilis , < im- (im- prefix²) + penetrābilis penetrable adj. and n. Not penetrable. 1. That cannot be penetrated, pierced, or entered; impossible to get into or through. Const. to, by. ΘΚΠ the world > movement > motion in a certain direction > movement over, across, through, or past > [adjective] > through > that may be passed through > not impenetrablea1464 impervious1615 impervial1618 unthroughfaresome1674 unpermeable1756 unthoroughfaresome1868 the world > movement > motion in a certain direction > going or coming in > [adjective] > penetrating > able to be penetrated > not unpenetrablec1425 impenetrablea1464 unpierceablec1480 pierceless1755 a1464 J. Capgrave Abbreuiacion of Cron. (Cambr. Gg.4.12) (1983) 105 Þe basnet was strong and inpenetrabel. 1585 T. Washington tr. N. de Nicolay Nauigations Turkie iv. iii. 115 b They had on their heads bourgonets, strong and impenetrable. 1603 M. Drayton Barrons Wars vi. lxix. 149 The sorrowes that she vttereth are such, Able to wound th' impenitrabl'st eares. 1667 J. Milton Paradise Lost ix. 1086 Woods impenetrable To Starr or Sun-light. View more context for this quotation 1687 London Gaz. No. 2251/4 His Hull..not being impenetrable to our great Shot. 1794 S. Williams Nat. & Civil Hist. Vermont 98 Impenetrable to the rain. 1814 W. Wordsworth Excursion ii. 88 The hills Lay shrouded in impenetrable mist. View more context for this quotation 1832 W. Macgillivray Trav. & Researches A. von Humboldt xxv. 383 A kind of clay impenetrable by the roots of herbaceous plants. 1880 S. Haughton Six Lect. Physical Geogr. v. 229 One impenetrable forest. 2. transferred and figurative. Whose nature, meaning, etc. cannot be penetrated or discerned; inscrutable; unfathomable. a. Of things. ΘΚΠ the mind > mental capacity > intelligibility > unintelligibility > [adjective] uncouthc897 unnimlyc1225 incomprehensiblea1340 unsearchablec1384 unknowable?c1400 investigablea1425 uncomprehensiblea1425 unthinkablec1445 imperscrutablec1450 inscrutablec1450 inopinable?a1475 incomprenable1502 unspectable?1504 incogitablec1522 uncogitable1529 impenetrable1531 inimaginable1534 inexplicable1555 unsensible1555 unscrutable1562 unfashionable1563 unpenetrable1581 unexcogitable1592 ineffable1598 inexcogitable1599 indivinable1603 ininvestigable1604 incapable1605 searchless?1606 uncomprehensive1609 unconceivable1611 undivinable1611 unimaginable1611 unexplicable1615 unintelligible1616 unapprehensible?1617 unfathomable1617 imprehensible1622 ununderstandablea1631 indeprehensible1633 indiscernible1635 inscrute1639 inapprehensiblea1641 indiscoverable1640 unexaminable1641 impervestigable1643 fathomless1645 inconceivable1646 indeterminable1646 inexplorable1646 insearchable1647 incomprehended1652 comprehendlessa1654 incomprehensive1656 untraceable1661 uninvestigablea1677 unintelligent1683 incognoscible1691 thought-transcendinga1711 uncognizable1720 acataleptic1727 undescriptive1744 elusive1751 impalpable1781 inaccessible1796 unconjecturable1806 uncognoscible1821 unascertainable1827 unfixable1831 unguessable1832 unrealizable1832 unsurveyable1833 hard-shelled1835 unintellective1837 undeemed1845 graspless1849 unconjectured1850 incognizable1852 ungraspable1853 unreadable1853 super-cerebral1854 elusory1856 trans-conscious1865 intangible1880 uncatchable1892 unspelt1892 unplumbable1895 unknowledgeable1920 indiscutable1933 1531 T. Elyot Bk. named Gouernour i. xxiii. sig. Lvi^v Were the thing neuer so difficile (or as who saythe) impenitrable. 1692 tr. C. de Saint-Évremond Misc. Ess. 285 Nothing is more impenetrable than its [sc. the soul's] Nature, its Original, and its Duration. a1704 T. Brown Declam. Praise Poverty (rev. ed.) in Wks. (1730) I. 93 The legerdemain must be clean and the Conveyance impenetrable to the eye of the people. 1823 J. Lingard Hist. Eng. VI. 257 That the intention of proceeding to judgment might be kept an impenetrable secret. 1866 R. W. Dale Disc. Special Occasions vi. 188 Every article of it ends in impenetrable mystery. b. Of persons, their appearance, actions, etc. ΚΠ 1718 Free-thinker No. 75. 2 A long impenetrable Dissimulation. 1800 E. Hervey Mourtray Family II. 154 She watched his countenance whilst she spoke, but it was impenetrable. 1801 M. Edgeworth Forester in Moral Tales I. 157 He was..impenetrable on this subject. 1882 ‘Ouida’ In Maremma I. 70 She being a close and resolute woman, was impenetrable to the curiosity of her neighbours. absolute as noun.1811 Henry & Isabella II. 73 I hope you bring me some consolation from the fair impenetrable. 3. Impervious to intellectual or moral influences, impressions, or ideas. ΘΚΠ the mind > emotion > absence of emotion > [adjective] > lacking emotional sensibility unfeelingc1000 mis-feelinga1382 stonishc1450 unpainfulc1450 obtuse1509 sprightlessa1522 insensate1553 senseless1560 soulless1568 dull-esprited1591 impassible1592 bluntie1598 impenetrable1600 stockish1600 stolidc1600 incapable1601 stupid1605 tasteless1605 unsensitive1610 unexalted1611 insensible1617 unsensible1619 languid1622 immovable1639 dead-hearted1642 sterile1642 resupine1643 unaffectionate1645 iron-bound1648 resentlessa1649 torpid1656 torpulent1657 impassive1699 unreceptive1722 hebete1743 apathetic1744 stubbed1744 gustless1766 unresponsive1768 unsusceptible1779 tideless-blooded1786 unaffectioned1788 inaccessible1796 hebetudinous1820 unimpressible1828 insensitive1834 apathetical1835 non-sensitive1836 blunt-hearted1845 irreceptive1846 unreceptant1846 unimpressionable1847 anaesthetic1860 insentient1860 hard (also tough, sharp) as nails1862 unsqueamish1893 tone-deaf1894 unget-at-able1897 facty1901 zombie1937 pegamoid1957 1600 W. Shakespeare Merchant of Venice iii. iii. 18 It is the most impenitrable curre that euer kept with men. View more context for this quotation 1601 J. Marston et al. Iacke Drums Entertainm. iv. sig. G4^v Looke, on my knees I creepe, Be not impenetrable, beautious youth. 1785 W. Cowper Task vi. 505 ‘And dost thou dream’, the impenetrable man Exclaimed, ‘that me the lullabies of age..Can cheat?’ 1865 M. Arnold Ess. Crit. v. 170 Aristocracies are, as such, naturally impenetrable by ideas. 4. Physics. Possessing the quality of impenetrability (see impenetrability n. 2). ΘΚΠ the world > matter > physics > [adjective] > unable to occupy same space and time impenetrable1666 1666 R. Boyle Origine Formes & Qualities 3 There is one..Universal Matter common to all Bodies, by which I mean a Substance extended, divisible and impenetrable. 1717 S. Clarke tr. G. W. Leibniz in Papers between Leibnitz & Clarke 207 Some have fancied, that Man..became Solid, Opake, and Impenetrable by his Fall. 1829 Nat. Philos. (Libr. Useful Knowl.) I. Pneumatics ii. §7. 2 Air is impenetrable. This entry has not yet been fully updated (first published 1899; most recently modified version published online June 2021). < adj.a1464
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