unbutton

== English == === Etymology === From Middle English onbottonen, unbotonen; equivalent to un- +‎ button. === Pronunciation === IPA(key): /ʌnˈbʌtən/ Rhymes: -ʌtən === Verb === unbutton (third-person singular simple present unbuttons, present participle unbuttoning, simple past and past participle unbuttoned) (ambitransitive) To open (something) by undoing its buttons. (intransitive, ergative) To come open by having its buttons unfastened. ==== Related terms ==== unbuttoned ==== Translations ====