Definition of うく
- (v5k, vi) to float
それから彼女はあおむけに浮いていた。
Then she was floating on her back. - to become merry; to be cheerful
- to become loose; to become unsteady
- to feel out of it; to be cut off (e.g. from those around you); to feel out of place
若者ばかりのそのコンサート会場でおじさんのわたしはすっかりまわりから浮いていた。
Being at the concert hall full of young kids made an old duffer like me feel out of tune. - to be frivolous; to be uncertain
- to have no basis; to be unreliable