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The definition of serious
7 Definitions of: serious
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- adjective, grave in nature or disposition; thoughtful
- adjective, marked by deep feeling; in earnest; sincere
- adjective, concerned with important matters
- adjective, requiring effort or concentration
- adjective, giving rise to fear or anxiety; critical
- adjective, worthy of regard because of substantial quantity or quality
- adjective, extreme or remarkable
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- Show me the etymology of the word: serious
| Synonyms: | earnest, extreme, honest, gravity, determined, importance, urgent, moment, weight, danger | And more... |
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| Antonyms: | light-hearted, insincere |
From Collins
©HarperCollins 2008. Collins English Dictionary definition of serious