UNBUTTONED
unbuttoned, unfastened
(adjective) not buttoned; “the wind picked up the hem of her unbuttoned coat”
unbuttoned, unlaced
(adjective) not under constraint in action or expression; “this unbuttoned and disrespectful age”- Curtis Bok; “unlaced behavior in the neighborhood pub”
Source: WordNet® 3.1
Verb
unbuttoned
simple past tense and past participle of unbutton
Adjective
unbuttoned (comparative more unbuttoned, superlative most unbuttoned)
In disarray.
Informal, casual.
Antonyms
• buttoned-up
Source: Wiktionary
UNBUTTON
Un*but"ton, v. t. Etym: [1st pref. un- + button.]
Definition: To loose the buttons of; to unfasten.
Source: Webster’s Unabridged Dictionary 1913 Edition