serious
-
(a) concerned with work or important matters rather than play or trivialities
- a serious student of history
- a serious attempt to learn to ski
- gave me a serious look
- a serious young man
- are you serious or joking?
- Don't be so serious!
-
(s) of great consequence
- marriage is a serious matter
-
(s) causing fear or anxiety by threatening great harm
- a dangerous operation
- a grave situation
- a grave illness
- grievous bodily harm
- a serious wound
- a serious turn of events
- a severe case of pneumonia
- a life-threatening disease
-
(s) appealing to the mind
- good music
- a serious book
- (a) completely lacking in playfulness unplayful, sober,
-
(s) requiring effort or concentration; complex and not easy to answer or solve
- raised serious objections to the proposal
- the plan has a serious flaw