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ser·i·ous
 serious
- pronunciation:
- si
ri
 s
- features:
- Word Explorer
| part of speech: |
adjective |
| definition 1: |
marked by careful thinking or consideration.
He has a serious decision to make.- synonyms:
- thoughtful
- similar words:
- careful, earnest, sincere
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| definition 2: |
not smiling or laughing; solemn; grave.
The policeman had a serious look on his face.- synonyms:
- earnest, grave, sober
- antonyms:
- cheerful, comic, comical, frivolous, funny, giddy, humorous, idle, light, lighthearted, merry, playful
- similar words:
- grim, humorless, severe, solemn, somber
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| definition 3: |
important; needing careful thought.
Air pollution is a serious matter.- synonyms:
- crucial, grave, heavy, important
- antonyms:
- minor, ridiculous, trivial
- similar words:
- earnest, great, momentous, vital
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| definition 4: |
dangerous; requiring attention right away.
He has a serious heart problem.A serious storm is heading toward Buffalo.- synonyms:
- acute, critical, grave
- antonyms:
- minor
- similar words:
- bad, crucial, dangerous, fearful, harmful, hazardous, heavy, menacing, severe
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| related words: |
austere, capital, high, hopeless, important, nasty, profound, steady, tragic, urgent |
| derivations: |
seriously (adv.), seriousness (n.) |
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