- serious */*/*/
- UK [ˈsɪərɪəs] / US [ˈsɪrɪəs]
adjective
1) bad or dangerous enough to make you worrieda serious problem/mistake:
The sale of the company will have serious implications for people's jobs.
a serious illness/accident/injury:It's not a serious problem – we should be able to fix it without too much trouble.
a serious crime/offence/threat:a serious head injury
An accident like this poses a serious threat to the environment.
2) important and deserving attentionThis is an extremely serious matter.
He has no serious competition for the post.
3) meaning what you say or do, and not making a jokeI'm sorry, I didn't realize you were being serious.
serious about:The police have made no serious attempt to address these issues.
serious about (doing) something:I'm not convinced they're serious about the deal.
deadly/dead (= completely) serious:Do you think Mike's serious about going to live in New Zealand?
"Are you serious about leaving your job?" "Dead serious."
4) careful and detailedserious consideration/thought/discussion:We'll have to give the situation some serious thought.
5)a) someone who is serious thinks carefully about things and does not laugh muchPeter seems serious but he actually has a good sense of humour.
b) appearing worried or upsetIs Mary all right? She looked a bit serious.
6) [usually before noun] dealing with important, complicated, or difficult ideas or subjectsserious books/music
7) if you are in a serious romantic relationship with someone, you intend to stay together for a long timea serious boyfriend/girlfriend/relationship:Is it getting serious with you and June, then?
He's never had a serious relationship with anyone.
8) involved in an activity in a way that shows you like it a lot and think it is importantMy father is a serious runner.
9) informal extreme, or large in amountWe did some serious hiking last weekend.
It's time you made some serious money.
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Derived word:
seriousness
UK / US noun uncountable
English dictionary. 2014.