'Serious' definitions:

Definition of 'serious'

From: WordNet
adjective
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!" [ant: frivolous]
adjective
Of great consequence; "marriage is a serious matter"
adjective
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" [syn: dangerous, grave, grievous, serious, severe, life-threatening]
adjective
Appealing to the mind; "good music"; "a serious book" [syn: good, serious]
adjective
Completely lacking in playfulness [syn: unplayful, serious, sober] [ant: playful]
adjective
Requiring effort or concentration; complex and not easy to answer or solve; "raised serious objections to the proposal"; "the plan has a serious flaw"

Definition of 'Serious'

From: GCIDE
  • Serious \Se"ri*ous\, a. [L. serius: cf. F. s['e]rieux, LL. seriosus.]
  • 1. Grave in manner or disposition; earnest; thoughtful; solemn; not light, gay, or volatile. [1913 Webster]
  • He is always serious, yet there is about his manner a graceful ease. --Macaulay. [1913 Webster]
  • 2. Really intending what is said; being in earnest; not jesting or deceiving. --Beaconsfield. [1913 Webster]
  • 3. Important; weighty; not trifling; grave. [1913 Webster]
  • The holy Scriptures bring to our ears the most serious things in the world. --Young. [1913 Webster]
  • 4. Hence, giving rise to apprehension; attended with danger; as, a serious injury. [1913 Webster]
  • Syn: Grave; solemn; earnest; sedate; important; weighty. See Grave. [1913 Webster] -- {Se"ri*ous*ly}, adv. -- {Se"ri*ous*ness}, n. [1913 Webster]

Synonyms of 'serious'

From: Moby Thesaurus