adjective
concerned with work or important matters rather than play or trivialities
Examples
- 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!
adjective
of great consequence
Examples
- marriage is a serious matter
adjective
causing fear or anxiety by threatening great harm
Synonyms
Examples
- 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
adjective
appealing to the mind
Synonyms
Examples
- good music
- a serious book
adjective
completely lacking in playfulness
Synonyms
adjective
requiring effort or concentration
Examples
- complex and not easy to answer or solve
- raised serious objections to the proposal
- the plan has a serious flaw