hyper

/ipɛʁ/
1.
adverb

very; extremely (colloquial intensifier)

Ce resto est hyper cher mais la nourriture vaut le coup.

This restaurant is really expensive but the food is worth it.

2.
adjective

hyperactive; overexcited (informal, often short for « hyperactif »)

Calme-toi, t'es hyper aujourd'hui, tu vas t'épuiser.

Calm down, you're so hyper today, you'll wear yourself out.