Word: unbutton
Part of speech: Verb
Syllables: un
but
ton
Definition: To come open by having its buttons unfastened.
Morphemes:
Affix: un-
Language: en
PoS: Prefix
Meaning: deprive of, release from, free from, remove from, extract from
Affix: button
Language: en
PoS: Verb
Meaning: To be fastened by a button or buttons.