Godan verb with 'ku' ending, Intransitive verb

to float

to become merry; to be cheerful

see 浮かぬ顔

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

Colloquial

to be frivolous; to be uncertain

to have (time, money, etc.) left over; to be saved (e.g. money)

to have no basis; to be unreliable