- The definition of serious is showing deep thought, not joking, or a situation that requires careful thought.
- An example of serious is wearing a full suit to a casual dinner; serious attire.
- An example of serious is a person who doesn't smile or laugh easily; serious person.
- An example of serious is sky diving; serious sport.
A man with a serious expression.
serious definition by Webster's New World
- of, showing, having, or caused by earnestness or deep thought; earnest, grave, sober, or solemn: a serious person
- meaning what one says or does; not joking or trifling; sincere
- meant in earnestness; not said or done in play
- concerned with grave, important, or complex matters, problems, etc.; weighty: a serious novel
- requiring careful consideration or thought; involving difficulty, effort, or considered action: a serious problem
- giving cause for concern; dangerous: a serious wound
Origin: Middle English seryows ; from Midieval Latin seriosus ; from Classical Latin serius, grave, origin, originally , probably weighty, heavy ; from uncertain or unknown; perhaps Indo-European base an unverified form swer- from source Old English swær, heavy, sad, Gothic swers, important, origin, originally , heavy
serious definition by American Heritage Dictionary
- Grave in quality or manner: gave me a serious look.
- a. Carried out in earnest: engaged in serious drinking; serious study of Italian.b. Deeply interested or involved: a serious card player.c. Designed for and addressing grave and earnest tastes: serious art; serious music.d. Not trifling or jesting: I'm serious: we expect you to complete the assignment on time. Her question was serious enough to deserve a thoughtful response.e. Informal Of considerable size or scope; substantial: a cleanup that cost serious money.f. Of such character or quality as to appeal to the expert, the connoisseur, or the sophisticate: “Every serious kitchen needs at least one peppermill” (Washington Post).
- Concerned with important rather than trivial matters: a serious student of history.
- a. Being of such import as to cause anxiety: serious injuries; a serious turn of events.b. Too complex to be easily answered or solved: raised some serious objections to the proposal.
Origin: Middle English, from Old French serieux, from Late Latin sēriōsus, from Latin sērius.
- seˈri·ous·ly adverb
- seˈri·ous·ness noun
serious - Medical Definition