gravest

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serious; gloomy adj.
crucial, dangerous adj.

ADJECTIVE

serious; gloomy

Synonyms

STRONG

dignified dull earnest heavy muted quiet sage sedate sober subdued

WEAK

cold sober deadpan dour grim grim-faced leaden long-faced meaningful no-nonsense ponderous sad saturnine solemn somber staid strictly business thoughtful unsmiling

Antonyms

STRONG

agitated boisterous excited light lively trivial unimportant

WEAK

cheerful frivolous funny happy inconsequential ridiculous silly

ADJECTIVE

crucial, dangerous

Synonyms

STRONG

acute fell heavy killing major pressing threatening

WEAK

afflictive consequential critical deadly destructive dire exigent fatal grievous hazardous important life-and-death momentous of great consequence ominous perilous serious severe significant ugly urgent vital weighty

Antonyms

STRONG

insignificant little small trivial unimportant

WEAK

cheerful frivolous funny happy inconsequential ridiculous silly

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.

See Examples For:

gravest

Established in 2002, the ICC prosecutes individuals accused of the gravest atrocities and acts as a last resort when countries do not have adequate legal systems to ensure accountability.

From Barron's ● Aug. 11, 2026

Mr. Rubio states that at its inception the ICC was proposed as a backstop against the gravest crimes.

From The Wall Street Journal ● Jul. 21, 2026

From the gravest to the most basic, a set of choices will confront Andy Burnham as soon as he walks through the Downing Street door.

From BBC ● Jul. 4, 2026

Alicia Keys fills the CRV that drives me past MacArthur Park, site of my gravest parenting anxieties.

From Slate ● May 10, 2026

The gravest issues seem to have occurred among the partisans, the guerrilla resistance fighters on the German-occupied side of the front lines.

From "A Thousand Sisters" by Elizabeth Wein