serious
of, showing, or characterized by deep thought.
of grave or somber disposition, character, or manner: a serious occasion; a serious man.
being in earnest; sincere; not trifling: His interest was serious.
requiring thought, concentration, or application: serious reading; a serious task.
weighty or important: a serious book; Marriage is a serious matter.
giving cause for apprehension; critical: The plan has one serious flaw.
Medicine/Medical. (of a patient's condition) having unstable or otherwise abnormal vital signs and other unfavorable indicators, as loss of appetite and poor mobility: patient is acutely ill.
that which is of importance, grave, critical, or somber: You have to learn to separate the serious from the frivolous.
Origin of serious
1synonym study For serious
Other words for serious
Opposites for serious
Other words from serious
- se·ri·ous·ness, noun
- half-se·ri·ous, adjective
- half-se·ri·ous·ly, adverb
- non·se·ri·ous, adjective
- non·se·ri·ous·ly, adverb
- o·ver·se·ri·ous, adjective
- o·ver·se·ri·ous·ly, adverb
- qua·si-se·ri·ous, adjective
- qua·si-se·ri·ous·ly, adverb
- su·per·se·ri·ous, adjective
- su·per·se·ri·ous·ly, adverb
- ul·tra·se·ri·ous, adjective
- ul·tra·se·ri·ous·ly, adverb
- un·se·ri·ous, adjective
- un·se·ri·ous·ly, adverb
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2024
British Dictionary definitions for serious
/ (ˈsɪərɪəs) /
grave in nature or disposition; thoughtful: a serious person
marked by deep feeling; in earnest; sincere: is he serious or joking?
concerned with important matters: a serious conversation
requiring effort or concentration: a serious book
giving rise to fear or anxiety; critical: a serious illness
informal worthy of regard because of substantial quantity or quality: serious money; serious wine
informal extreme or remarkable: a serious haircut
Origin of serious
1Derived forms of serious
- seriousness, noun
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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