Hyper comes from a Greek word for “too much.” If someone is hyperactive, she might have attention deficit hyperactivity disorder (ADHD). People who suffer from it are hyperactive and can't concentrate. You could say they're hyper, which is short for hyperactive, but that's not very polite.

What is the root word of hyperactive?

Definition & Meaning: Word Root Hyper

Hyper- means 'too, over, excessive, beyond'. 'Hyperactive' is a word that start with the prefix hyper. You say 'hyperactive' about someone, who is too active and cannot relax. The prefix hyper- is a morpheme, thus, it cannot be divided.

Where did the word hyper come from?

word-forming element meaning "over, above, beyond," and often implying "exceedingly, to excess," from Greek hyper (prep. and adv.) "over, beyond, overmuch, above measure," from PIE root *uper "over."