serious

adjective/ˈsɪriəs/

Frequency rank: #654 of 20,003 in the WORDED list (wordfreq data)

Meaning

Important and needing careful thought; not joking.

Illustration for the English word “serious”

Example sentence

He didn't realize how serious the problem was until it was too late.

Synonyms & related words

More words in ranks 601–700