the wind picked up the hem of her unbuttoned coat.
Examples of unbuttoned
unbuttoned
As Crews was introduced, he unbuttoned his shirt and made his pec muscles dance.
From the washingtontimes.com
Now the unbuttoned look is the norm for megachurch pastors such as Rick Warren.
From the chron.com
The top of his shirt is unbuttoned, he scratches his chest, his life an open book.
From the ocregister.com
The romantic lure of patriotism unbuttoned is not just catnip to politicians.
From the post-gazette.com
She was lying on the bed, wearing only an unbuttoned black and white kimono jacket.
From the time.com
Comes out tie-less, shirt unbuttoned, ready to supply the briefest possible answers.
From the suntimes.com
Some of the boys'blazers are unbuttoned, and red ties are slightly crooked.
From the cnn.com
John unbuttoned his shirt to his navel in a futile attempt to get some air.
From the thestate.com
Certain jazz musicians have always courted the unbuttoned energy of rhythm and blues.
From the economist.com
More examples
Undo the buttons of; "unbutton the shirt"
(unbuttoned) not buttoned; "the wind picked up the hem of her unbuttoned coat"
(unbuttoned) not under constraint in action or expression; "this unbuttoned and disrespectful age"- Curtis Bok; "unlaced behavior in the neighborhood pub"
To unfasten buttons; To open something by undoing its buttons
(unbuttoned-(n)) When a fish just mysteriously falls off the hook, even though the rod was bent and no slack given...a sad occurrence, but fairly common.