1) not serious or important; enjoying pleasure (too much) (frivolous)
2) foolish, bad behaviour (as by children) that is not serious (mischief)
3) in a mood for play; not serious (playful)
4) small and thin; small and not serious or important; to treat (a person) without proper respect or good manners (slight)
(trying to be) amusing (especially something serious)
tongue-in-cheek, kidding
not serious or important; enjoying pleasure (too much)
trivial, silly
doing no work; not active or in use; to spend (time) in a lazy manner
worthless, ineffective
(of a sin, error, fault) that can be forgiven or excused
pardonable
