IPA: //ˌklɔːstrəˈfoʊb//
KK: /klɔːstrəˈfoʊb/
A person who has a fear of being in closed or small spaces.
As a claustrophobe, she felt anxious in the crowded elevator.
Claustrophobe → It is formed from "claustrum" (from Latin, meaning a closed space or enclosure) and "phobia" (from Greek "phobos", meaning fear). The word describes a person who has a fear of closed or confined spaces.
Think of 'claustrum' meaning a closed space, and 'phobia' meaning fear — this helps you remember that a claustrophobe is someone who fears closed spaces.
No commonly confused words.