The tailor sighed when he realized the fabric had shrunk, making the coat unbuttonable.

Thanks to the new design, the winter parka was unbuttonable, allowing him to quickly open it when he overheated.

Please unbutton your coat before you sit down.

She unbuttoned her coat before entering the warm room.

He smiled and left the house with his jacket unbuttoned, carrying a cup of coffee.

The tailor's steady hands made the repeated unbuttonings look effortless.

She unbuttons her coat as she steps inside the warm café.

She was unbuttoning her coat when the phone rang.

Her unbuttoning of the blouse was done with practiced ease.