unfasten

English

Etymology

un- +‎ fasten

Verb

unfasten (third-person singular simple present unfastens, present participle unfastening, simple past and past participle unfastened)

(transitive) To detach from any connecting agency or link; to disconnect.
- c. 1596–1599, William Shakespeare, “The Second Part of Henry the Fourth, […]”, in Mr. William Shakespeares Comedies, Histories, & Tragedies […] (First Folio), London: […] Isaac Iaggard, and Ed[ward] Blount, published 1623, OCLC 606515358, [Act IV, scene i]:
  He doth unfasten so and shake a friend.
(intransitive) To come unloosed or untied.

Synonyms

undo

Antonyms

do up
button
button up
tie up
zip
zip up

Hyponyms

unbutton
untie
unzip

Translations

to detach from any connecting agency or link — See also translations at disconnect

Bulgarian: откачам (bg) (otkačam), отвързвам (bg) (otvǎrzvam)
Chinese:
Mandarin: 解開／解开 (zh) (jiěkāi)
Dutch: losmaken (nl)
Finnish: irrottaa (fi)
French: défaire (fr)
German: abschnallen, lösen (de), losmachen (de)
Greek: λύνω (el) (lýno), χαλαρώνω (el) (chalaróno), (unbutton) ξεκουμπώνω (el) (xekoumpóno), ξεδένω (el) (xedéno)
Ancient: λύω (lúō)
Irish: scaoil
Japanese: はずす (ja) (hazusu), ほどく (ja) (hodoku), 解く (ja) (とく, toku)
Russian: развя́зывать (ru) impf (razvjázyvatʹ), развяза́ть (ru) pf (razvjazátʹ), расстёгивать (ru) impf (rasstjógivatʹ), расстегну́ть (ru) pf (rasstegnútʹ)
Spanish: desabrochar (es)

to come unloosed or untied

Bulgarian: пткачам се (ptkačam se), развързвам се (razvǎrzvam se)
Dutch: loskomen (nl)
Finnish: irrota (fi)
Italian: sciogliere (it), svergare
Russian: развя́зываться (ru) impf (razvjázyvatʹsja), развяза́ться (ru) pf (razvjazátʹsja), расстёгиваться impf (rasstjógivatʹsja), расстегну́ться (ru) pf (rasstegnútʹsja)
Welsh: dod yn rhydd

References

unfasten in The Century Dictionary, New York, N.Y.: The Century Co., 1911