Definition of serious
- a quiet, serious girl
- serious study
- a serious play
- a serious question
- a serious musician
- serious objections
- a serious injury
- serious stereo equipment
- making serious money
- serious drinking
“You sound terrible.” “It's just a bad cold. Nothing serious.”
For my brother, not going to college was a serious mistake.
Crime is a serious problem in this neighborhood.
The team is a serious contender for the championship.
If you want to quit smoking, you have to make a serious effort.
They had a serious conversation about their relationship.
a serious novel about modern life
The story raises serious questions about our system of justice.
Dog shows are a serious business.
She is a serious cyclist who rides 200 miles each week.
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'serious.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
: having an important or dangerous possible result
: involving or deserving a lot of thought, attention, or work
: giving a lot of attention or energy to something
What made you want to look up serious? Please tell us where you read or heard it (including the quote, if possible).
to grant as a privilege or special favor
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