Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “maniac”

See all translations

maniac

noun [C] uk   /ˈmeɪ.ni.æk/ us  

maniac noun [C] (INTERESTED)

informal a person who has a very strong interest in a particular activity: a football/sex maniac

maniac noun [C] (MENTALLY ILL)

a person who behaves in an uncontrolled way, not worrying about risks or danger: Some maniac was running down the street waving a massive metal bar. informal I won't get in the car with Richard - he drives like a maniac!
Translations of “maniac”
in Korean 미치광이…
in Arabic مَهووس بـِ…
in Portuguese maníaco, -a, louco…
in Catalan maníac, -a…
in Japanese マニア…
in Italian maniaco, -a…
in Chinese (Traditional) 強烈興趣, 入迷的人,狂熱愛好者…
in Russian маньяк…
in Turkish manyak, deli, çılgın…
in Chinese (Simplified) 强烈兴趣, 入迷的人,狂热爱好者…
in Polish maniak…
(Definition of maniac from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
What is the pronunciation of maniac?
Add Cambridge dictionaries to your browser to your website

Definitions of “maniac” in other dictionaries

Word of the Day

cold snap

a short period of cold weather

Word of the Day

Cleavage proves divisive in Cambridge’s words of 2014

by Alastair Horne,
December 19, 2014
​​​​ Other dictionaries may choose faddish novelties as their words of the year, but here at Cambridge, we like to do something different. We look for the words that have seen sudden surges in searches over the course of the year – words that have been baffling users of English and driven them

Read More 

cinderella surgery noun

December 15, 2014
cosmetic surgery to the feet We have all heard of people having nose jobs, boob jobs and liposuction – but now a new trend growing in popularity in America: Cinderella surgery.

Read More