unefficaciousadj.

Origin: Formed within English, by derivation. Etymons: un- prefix¹, efficacious adj.

Etymology: < un- prefix¹ + efficacious adj. Compare earlier inefficacious adj.Previous versions of the OED give the stress as: uneffiˈcacious.

(un- prefix¹ 1.)

ΘΚΠ

the world > action or operation > harm or detriment > disadvantage > uselessness > uselessness, vanity, or futility > [adjective] > ineffective

deadc1380

virtuelessa1393

uneffectuous1549

inefficace1570

limping1577

unprevailing1604

inficient1609

weak1609

unofficious1611

penny farthing1615

invalidable1634

invalid1635

unprevalent1640

ineffectible1650

ineffective1651

inefficacious1658

insignificant1661

uneffective1670

popgun1690

foible1715

unefficacious1744

inefficient1750

ineffectual1785

effete1790

foisonlessc1817

puttering1857

non-effective1862

non-efficient1863

shaftless1881

powder puff1911

fouled-up1942

1744 S. Johnson Deb. Senate Lilliput in Gentleman's Mag. Mar. 122 Mocking her Calamities with unefficacious Friendship.

This entry has not yet been fully updated (first published 1921; most recently modified version published online March 2022).

单词	unefficacious
释义	unefficaciousadj. Origin: Formed within English, by derivation. Etymons: un- prefix¹, efficacious adj. Etymology: < un- prefix¹ + efficacious adj. Compare earlier inefficacious adj.Previous versions of the OED give the stress as: uneffiˈcacious. (un- prefix¹ 1.) ΘΚΠ the world > action or operation > harm or detriment > disadvantage > uselessness > uselessness, vanity, or futility > [adjective] > ineffective deadc1380 virtuelessa1393 uneffectuous1549 inefficace1570 limping1577 unprevailing1604 inficient1609 weak1609 unofficious1611 penny farthing1615 invalidable1634 invalid1635 unprevalent1640 ineffectible1650 ineffective1651 inefficacious1658 insignificant1661 uneffective1670 popgun1690 foible1715 unefficacious1744 inefficient1750 ineffectual1785 effete1790 foisonlessc1817 puttering1857 non-effective1862 non-efficient1863 shaftless1881 powder puff1911 fouled-up1942 1744 S. Johnson Deb. Senate Lilliput in Gentleman's Mag. Mar. 122 Mocking her Calamities with unefficacious Friendship. This entry has not yet been fully updated (first published 1921; most recently modified version published online March 2022). < adj.1744
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