to have a gas
- idiom
- Slang
- Even though it rained, we managed to have a gas during our picnic, enjoying each other's company.
Examples
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I'm having a gas.
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We really had a gas at the party last night, dancing and laughing with friends.
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Want to have a gas online?
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The kids had a gas playing games at the fair; they didn't want to leave.
Synonyms
To enjoy yourself at an event or activity
To enjoy yourself a lot
Enjoy yourself a lot
Antonyms
How Fun
Surface Forms
Morphology
have + a + gas
A B1 learner who knows 'have' (to experience), 'a' (article) and 'gas' (a gaseous substance) would not predict the slang meaning 'a very enjoyable time' from those literal parts; the sense of 'a gas' = 'a lot of fun' is idiomatic and informal. This meaning is language-specific slang rather than a transparent compositional extension, so it would be unpredictable without prior exposure.
Etymology
The idiom have a gas may come from people using laughing gas at parties. Because the gas made people laugh and enjoy themselves, to have a gas came to mean 'to have a very enjoyable and fun time'.