serious adj.

1 bad/dangerous

VERBS be, look, seem, sound | become, get By this time the riots were getting serious. | remain

ADV. extremely, particularly, really, very | fairly, quite | potentially

2 not joking

VERBS be, look, sound Come on, be serious! | become, turn He became serious all of a sudden.

ADV. deadly, quite, very

PREP. about Are you serious about resigning?