Word parts change

pyro- + -maniac

Pronunciation change

  • (US) IPA (key): /ˌpaɪroʊˈmeɪniæk/ or /ˌpaɪrəˈmeɪniæk/

Noun change

Singular
pyromaniac

Plural
pyromaniacs

  1. (countable) A pyromaniac is someone who is obsessed with fire, especially someone who often commits arson.