Dic: review of the prefix, hyper-

■ hyper-

1. above, over, or in excess: hypercritical
2. (in medicine) denoting an abnormal excess: hyperacidity
3. indicating that a chemical compound contains a greater than usual amount of an element: hyperoxide

■  hyper-

 1. more than usual, especially too much

• hypersensitive (= too sensitive) 
• hyper-inflation
• a hyper-extended knee

 2. beyond the usual size or limits

• a hyperlink (= from one website to another)

■  Hyper- is used to form adjectives that describe someone as having a lot or too much of a particular quality.

• I hated my father. He was hyper-critical and mean...
• He is one of those lean, hyper-fit people.

..... COLLINS, LDOCE, COBUILD

CF. ■ hyper: If someone is hyper, they are very excited and energetic. (INFORMAL)

• I was incredibly hyper. I couldn't sleep. (= hyperactive)

.... COBUILD