Serious

Part of speech: adjective (a.)

1. Grave in manner or disposition; earnest; thoughtful; solemn; not light, gay, or volatile. He is always serious, yet there is about his manner a graceful ease. Macaulay.

2. Really intending what is said; being in earnest; not jesting or deceiving. Beaconsfield.

3. Important; weighty; not trifling; grave. The holy Scriptures bring to our ears the most serious things in the world. Young.

4. Hence, giving rise to apprehension; attended with danger; as, a serious injury.

Synonyms: Grave; solemn; earnest; sedate; important; weighty. See Grave. Se"ri*ous*ly, adv. Se"ri*ous*ness, n.