serious definition, meaning - what is serious in the British English Dictionary & Thesaurus - Cambridge Dictionaries Online

Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “serious”

See all translations

serious

adjective uk   /ˈsɪə.ri.əs/  us   /ˈsɪr.i-/

serious adjective (BAD)

B1 severe in effect; bad: a serious illness There were no reports of serious injuries. The new tax regulations have landed some of the smaller companies in serious trouble. Drugs have become a serious problem in a lot of schools. This is a very serious offence. He's been taken to hospital where his condition is described as serious but stable. [after noun] mainly Indian English very ill
More examples

serious adjective (NOT JOKING)

B1 not joking or intended to be funny: Please don't laugh - I'm being serious. He was wearing a very serious expression and I knew something was wrong. On the surface it's a very funny novel but it does have a more serious underlying theme.B1 A serious person is quiet, thinks carefully about things, and does not laugh a lot: I remember her as a very serious child.
More examples

serious adjective (DETERMINED)

[after verb] determined to follow a particular plan of action: Is she serious about going to live abroad? [after verb] If two people who have a loving relationship are serious about each other, they intend to stay with each other for a long time and possibly marry: She's had a lot of boyfriends but Simon's the only one she's been serious about.
More examples

serious adjective (NEEDING ATTENTION)

B2 [before noun] needing or deserving your complete attention: That's an interesting job offer - I'd give it some serious consideration if I were you. We've got some serious talking to do, you and me.
More examples

serious adjective (EXTREME)

informal extreme in degree or amount: We did some fairly serious walking over the weekend. I mean we're talking serious (= a large amount of) money, right? informal very good of its type: This is a serious wine, Belle, you've just got to try some.
(Definition of serious from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
What is the pronunciation of serious?
Add Cambridge dictionaries to your browser to your website

Definitions of “serious” in other dictionaries

Word of the Day

cup tie

a game between two teams trying to win a cup (= prize), especially in football

Word of the Day

What’s All The Commotion About? (Words to describe sounds)

by Kate Woodford,
May 20, 2015
​​​ In this post we look at a range of words and phrases that we use to describe noise and the absence of noise. Starting with complete quiet, we sometimes use the noun hush to describe silence: A hush fell over the room as the bride walked in./There was a deathly hush (=complete

Read More 

ancestral health noun

May 25, 2015
diet based on the presumed diet of our Palaeolithic ancestors ‘Ancestral health,’ to use a term popular among Paleo followers, has gone mass.

Read More