The suffix "-phobia" is used in English to form nouns that denote an irrational fear or aversion to something. 
This suffix originates from the Greek word "φόβος" (phobos), which means "fear" or "panic."

Inglish uses -fôbia.

Examples:
    claustrophobia
    arachnophobia
    acrophobia

Inglish:
    claustrofôbia
    aràknofôbia
    acrofôbia