Definitions for unbuttonedʌnˈbʌt nd
Random House Webster's College Dictionary
Category: Common Vocabulary
free, open, or informal; unrestrained:
Category: Common Vocabulary, Informal
Origin of unbuttoned:
"the wind picked up the hem of her unbuttoned coat"
not under constraint in action or expression
"this unbuttoned and disrespectful age"- Curtis Bok; "unlaced behavior in the neighborhood pub"