SE'RIOUS, adjective [Latin serius.] 1. Grave in manner or disposition; solemn; not light, gay or volatile; as a serious man; a serious habit or disposition. 2. Really intending what is said; being in earnest; not jesting or making false pretense. Are you serious, or in jest? 3. Important; weighty; not trijling. The holy Sciptures bring to your ears the most serious things in the world. Young. 4. Particularlyattentive to religioul concerns or one's own religious state.
Source: Webster's 1828 American Dictionary ↗ · public-domain · returned verbatim, no AI