hyper If someone is hyper, they are very excited and energetic. INFORMAL adj usu v-link ADJ
(=hyperactive) I was incredibly hyper. I couldn't sleep.
Hyper- is used to form adjectives that describe someone as having a lot or too much of a particular quality. prefix
I hated my father. He was hyper-critical and mean..., He is one of those lean, hyper-fit people.
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