monomaniac

Pronunciation

• (UK) IPA ^(key): /ˌmɒnəʊˈmeɪnɪæk/
• (US) IPA ^(key): /ˌmɑnoʊˈmeɪnɪæk/

Noun

Singular monomaniac

Plural monomaniacs

1. (countable) A monomaniac is a person who is obsessed with a single person or thing to the exclusion of other concerns.