indefatigableadj.
/ɪndɪˈfatɪɡəb(ə)l/ Incapable of being wearied; that cannot be tired out; unwearied, untiring, unremitting in labour or effort.
a. Of persons or things personified.
ΘΚΠ
the mind > will > decision > perseverance or persistence > [adjective]
unwearyc893
unwearieda1240
perseverant1340
continuing1393
persevering?a1425
importunate1477
infatigable?1510
unfatigablec1550
persisting1552
unweariable1561
holdfast1567
indefatigable1586
patient1590
faintless1593
untired1597
untired1600
assidual1605
unrelenting1606
persistive1609
unwearyinga1614
hard1615
indefesse1621
constant1639
assiduous1660
dogged1700
unremitting1730
inexhaustible1762
unremitted1774
untiring1823
persistent1830
sleuth1864
tug-like1890
the world > physical sensation > sleeping and waking > weariness or exhaustion > [adjective] > capable of being wearied or exhausted > not weary or able to be wearied
unwearyc893
unwearieda1240
wearilessc1430
long-breatheda1513
unfulyeit?a1513
unfouled1535
indefatigable1586
entire1590
untired1597
tireless1605
untirable1607
unwearyinga1614
unwappereda1625
undefatigable1630
unfatigued1705
unfaltering1727
unworn1759
unfatiguable1799
unfatiguing1808
undrooping1814
fatigueless1818
untiring1859
unflagging1860
1586 [implied in: W. Webbe Disc. Eng. Poetrie sig. C.iiii Master Arthur Golding..which..trauelleth as yet indefatigably, and is addicted without society, by his continuall laboure, to profit this nation and speeche in all kind of good learning. (at indefatigably adv.)].
1611 R. Cotgrave Dict. French & Eng. Tongues Indefatigable, indefatigable, vnweariable, vntirable, not to be toyled out.
1641 Naunton's Fragmenta Regalia (new ed.) 31 He was an indefatigable [1641 (ed. 1) indefalliable] Reader, whether by Sea or Land.
1667 J. Milton Paradise Lost ii. 408 Upborn with indefatigable wings Over the vast abrupt. View more context for this quotation
1711 J. Addison Spectator No. 115. ¶6 My Friend Sir Roger has been an indefatigable Man in Business of this kind.
1781 E. Gibbon Decline & Fall III. xxix. 111 Active and indefatigable in the pursuit of revenge.
1849 G. Grote Hist. Greece VI. ii. xlvi. 487 He was indefatigable in his attention to public business.
1858 W. E. Gladstone Stud. Homer II. ii. 137 The indefatigable students of Germany.
b. Of qualities or actions.
ΚΠ
1621 R. Burton Anat. Melancholy iii. iv. i. i. 710 An indefatigable loue and beautie.
1646 Sir T. Browne Pseudodoxia Epidemica i. viii. 31 A man of great eloquence, and industry indefatigable . View more context for this quotation
1781 E. Gibbon Decline & Fall (1869) I. xviii. 476 His diligence was indefatigable.
1854 H. H. Milman Hist. Lat. Christianity III. vii. vi. 230 The Hermit..with indefatigable restlessness went from province to province.
This entry has not yet been fully updated (first published 1900; most recently modified version published online September 2018).
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adj.1586