unbend — OET · Shobdo

unbend

verb

1 I had trouble unbending my cramped knees:

straighten, straighten out, extend, flex, uncurl, flatten.

▷antonyms bend.

2 you could be fun too, you know, if you'd only unbend a little:

relax, become less formal, become informal, unwind, de-stress, loosen up, let oneself go;

informal let one's hair down, let up, let it all hang out, hang loose, come down from one's high horse.

▷antonyms tense up.

unbend Oxford Dictionary of English