Definition of hyper
- hyper children
I get a little hyper when I drink too much coffee.
she's so hyper that she's the last person you'd want to turn to in an emergency
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'hyper.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
First Known Use: circa 1942See Words from the same year
: excessively or extremely
: excessive or extreme
What made you want to look up hyper? Please tell us where you read or heard it (including the quote, if possible).
of very fine texture or delicate form
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