Serious

/ˈsɪəriəs/

Meaning & Definition

adjective

of great consequence or importance; vital.

The project requires serious consideration before making any decisions.

not joking or trifling; earnest.

He spoke in a serious tone about the need for change in the community.

likely to lead to undesirable outcomes; grave or severe.

The doctor said the injury was serious and required immediate surgery.

solemn or grave in demeanor.

The serious expression on his face indicated the gravity of the situation.

Middle English, from Old French 'sérieux', from Latin 'serius'.

serious business

an important matter requiring attention

serious face

a facial expression indicating no humor

serious about something

to be earnest or dedicated regarding a matter

take someone/something seriously

to regard someone or something as important or deserving of consideration

seriously speaking

used to emphasize that what follows is genuine or serious in nature

seriousness

the quality or state of being serious

seriously

in a serious manner

serious-minded

having a serious and thoughtful character

No joke.

When I say I'm serious, I mean it—no joke.

For real.

He was for real about his plans to move.

Dead serious.

I'm dead serious about this job interview.