maniac
ma-ni-ac
noun
A person exhibiting extremely wild, violent, or obsessive behaviour, often mentally unstable.
"He drove like a complete maniac on the motorway."
Thesaurus
Synonyms: lunatic
ma-ni-ac
A person exhibiting extremely wild, violent, or obsessive behaviour, often mentally unstable.
"He drove like a complete maniac on the motorway."
Synonyms: lunatic