noun

seriousness

seriousness, gravity, solemnity, earnestness

I don't think you understand the seriousness of the situation.

I don't think you understand the seriousness of the situation.

His seriousness made everyone feel uncomfortable.

His seriousness made everyone feel uncomfortable.

the seriousness of ((sth.)) the quality of (sth.) being important or dangerous They understood the seriousness of the problem.

Synonyms: gravity, importance, solemnity; Antonyms: frivolity, light-heartedness

From the adjective 'serious' + the noun-forming suffix '-ness', which indicates a state or quality.

Remember that '-ness' creates a noun from an adjective. 'Happy' becomes 'happiness', and 'serious' becomes 'seriousness'.

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