undoublev.

Etymology: un- prefix² 1d.Previous versions of the OED give the stress as: unˈdouble.

a. transitive. To take out of a doubled or folded state; to straighten out.

ΘΚΠ

the world > space > shape > straightness > make straight [verb (transitive)]

unfoldc890

evenOE

rightc1275

rectifyc1475

straight1530

unbow1538

straighten1542

unarch1598

uncrisp1598

uncurl1598

undouble1611

untuck1611

unwind1614

bendc1616

unbend1663

unwarp1670

evolve1689

unwrap1859

unkink1891

dekink1957

1611 J. Florio Queen Anna's New World of Words Sdoppiare, to vndouble, to vnfold.

1683 J. Moxon Mech. Exercises II. 325 As he comes to a Token-sheet, he un-doubles that, and smooths out the Crease.

1730 A. Gordon tr. F. S. Maffei Compl. Hist. Anc. Amphitheatres 363 Then undoubling the Rope,..I extended the Rope with a Pin.

1850 W. M. Thackeray Pendennis II. xx. 199 The dirty fist..was obliged to undouble itself.

b. intransitive. To become unfolded or straight.

ΘΚΠ

the world > space > shape > straightness > become straight [verb (intransitive)]

rectify1598

unbend1815

unarch1885

undouble1889

straighten1891

unkink1972

1889 Advance (Chicago) 14 Nov. To Jim's surprise, the fists undoubled, and no angry words came.

2. Chess. transitive. To move (pawns) so that one no longer stands directly in front of the other.

ΘΚΠ

society > leisure > entertainment > pastimes > game > board game > chess > [verb (transitive)] > tactics

to shut up1474

to take upc1475

neck1597

catch1674

to discover check1688

attack1735

retreat1744

fork1745

pin1745

retake1750

guard1761

interpose1761

castle1764

retract1777

to take (a pawn) en passant1818

capture1820

decline1847

cook1851

undouble1868

unpin1878

counter1890

fidate1910

sacrifice1915

fianchetto1927

1868 Illustr. London News 25 Aug. 187 By this advance Dr. Lange undoubles and consolidates the Pawns on the Q's side, and thus adds greatly to the strength of his game.

This entry has not yet been fully updated (first published 1921; most recently modified version published online December 2019).

单词	undouble
释义	undoublev. Etymology: un- prefix² 1d.Previous versions of the OED give the stress as: unˈdouble. 1. a. transitive. To take out of a doubled or folded state; to straighten out. ΘΚΠ the world > space > shape > straightness > make straight [verb (transitive)] unfoldc890 evenOE rightc1275 rectifyc1475 straight1530 unbow1538 straighten1542 unarch1598 uncrisp1598 uncurl1598 undouble1611 untuck1611 unwind1614 bendc1616 unbend1663 unwarp1670 evolve1689 unwrap1859 unkink1891 dekink1957 1611 J. Florio Queen Anna's New World of Words Sdoppiare, to vndouble, to vnfold. 1683 J. Moxon Mech. Exercises II. 325 As he comes to a Token-sheet, he un-doubles that, and smooths out the Crease. 1730 A. Gordon tr. F. S. Maffei Compl. Hist. Anc. Amphitheatres 363 Then undoubling the Rope,..I extended the Rope with a Pin. 1850 W. M. Thackeray Pendennis II. xx. 199 The dirty fist..was obliged to undouble itself. b. intransitive. To become unfolded or straight. ΘΚΠ the world > space > shape > straightness > become straight [verb (intransitive)] rectify1598 unbend1815 unarch1885 undouble1889 straighten1891 unkink1972 1889 Advance (Chicago) 14 Nov. To Jim's surprise, the fists undoubled, and no angry words came. 2. Chess. transitive. To move (pawns) so that one no longer stands directly in front of the other. ΘΚΠ society > leisure > entertainment > pastimes > game > board game > chess > [verb (transitive)] > tactics to shut up1474 to take upc1475 neck1597 catch1674 to discover check1688 attack1735 retreat1744 fork1745 pin1745 retake1750 guard1761 interpose1761 castle1764 retract1777 to take (a pawn) en passant1818 capture1820 decline1847 cook1851 undouble1868 unpin1878 counter1890 fidate1910 sacrifice1915 fianchetto1927 1868 Illustr. London News 25 Aug. 187 By this advance Dr. Lange undoubles and consolidates the Pawns on the Q's side, and thus adds greatly to the strength of his game. This entry has not yet been fully updated (first published 1921; most recently modified version published online December 2019). < v.1611
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