110 Synonyms & Antonyms For SERIOUS

Synonyms & Antonyms

Examples

Related Words

Definitions serious [seer-ee-uhs] / ˈsɪər i əs / ADJECTIVE somber, humorless Synonyms STRONGEST deliberate genuine honest severe sincere thoughtful STRONG sober WEAK austere bound bound and determined businesslike cold sober contemplative deadpan determined downbeat earnest funereal go for broke grave grim intent long-faced meditative no-nonsense pensive pokerfaced reflective resolute resolved sedate set solemn staid steady stern unhumorous unsmiling weighty Antonyms STRONGEST deceptive dishonest false insincere misleading untrustworthy WEAK flippant funny happy light minor trivial unimportant unserious ADJECTIVE crucial, weighty Synonyms STRONGEST dangerous deep difficult far-reaching grievous important major meaningful severe significant tough urgent WEAK arduous fateful fell formidable grave grim hard heavy laborious meaning business menacing momentous no joke no laughing matter of consequence operose out for blood playing hard ball pressing smoking sobering strenuous strictly business threatening ugly unamusing unhumorous worrying Antonyms STRONGEST calm easy facile friendly insignificant little meaningless minor small trivial unimportant worthless WEAK flippant funny happy light unserious

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Both sides present it as a serious clash of principles, but it’s a distraction from the real problem of AI misalignment.

From The Wall Street Journal

I staggered toward the wall and put my bag up there, but then wasn’t quite tall enough to sit without some serious scrambling.

From Literature

Finally it was over, the lights went on for good, and Treebaun turned to us, his lined face serious as he took the time to look each of us in the eye.

From Literature

Lady Drummond told him: "It will be obvious to you that these are very serious offences which have caused harm and upset to Kimberley's grieving family."

From BBC

Second is serious damage to the region’s oil production or infrastructure, especially the kind that would disrupt spare capacity in Saudi Arabia and the United Arab Emirates.

From The Wall Street Journal

Related Words

Words related to serious are not direct synonyms, but are associated with the word serious. Browse related words to learn more about word associations.

acute austere bad badder big big league bound and determined businesslike composed consequential critical dangerous deadpan decided deep demure determined devout fervent fervent/fervid funereal grave gravest gross hard harder heavyweight heavy heaviest heightened hell-bent high important incurable jeopardous life-and-death life-threatening major major-league material matter-of-fact meaningful memorable more acute more critical more dangerous more fervid more fervent more fervent more meaningful more pressing more significant more significant more solid more urgent more terrible more whole-hearted more wholehearted more wholehearted more whole hearted most dangerous most fervid most fervent most fervent most notable most pressing most significant most significant most terrible most whole-hearted most whole hearted most wholehearted most wholehearted most urgent nasty newsworthy no-nonsense notable noteworthy onerous parlous pensive pressing profound resolute ruminative sadder saddest sad sedate severe severe significant significant sincere sincerest sober sober somber solid staid studious subdued substantial terrible thoughtful ugly urgent venerable wholehearted wholehearted/whole-hearted

From Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.