unbuttoned

About 0.48 uses per million words.

Meaning

1. verb simple past and past participle of unbutton

   I unbuttoned my shirt to take it off.

2. adjective Having the buttons undone.
3. adjective In disarray. (Can we add an example for this sense?)
4. adjective Informal, casual.

Similar words

unrestrained unlaced unfastened open-collared undressed untightened unhemmed unshirted buttonless loosened

Often followed by

his her the and my to at shirt it