serious

1. 1

   Without humor or expression of happiness; grave in manner or disposition.

   • deadly serious
   • It was a surprise to see the captain, who had always seemed so serious, laugh so heartily.
2. 2

   Important; weighty; not insignificant.

   • This is a serious problem. We'll need our best experts.
3. 3

   Really intending what is said (or planned, etc); in earnest; not jocular or deceiving.

   • After all these years, we're finally getting serious attention.
   • He says he wants to buy the team, but is he serious?
4. 4

   Committed.

syn. austere · frightful · demure · serious · grave · earnest · grievous · lack-laughter · thoughtful · sad · sage · saturnine

ant. trifling · unimportant · jesting · gaudy · witty

1. 1

   seriously, in a serious manner (most often heard in take or mean serious)colloquialdialectalnot-comparable

   • The only time I walk out on singin' is when there's muckin' about and youse don't take it serious.