Sceptomaniac

A person who has an uncontrollable compulsion to be sceptical about everyone and everything

That girl is suspicious of everything.. she's such a sceptomaniac!

Sceptomaniac by FrillyNikkers October 26, 2010

skeptomaniac 

A chronic disbeliever, or "Doubting Thomas".

Don't bother telling Jan. That skeptomaniac never believes anything.

skeptomaniac by Maetrix June 3, 2008

scriptomaniac 

One who steals lighters and pens.

That bitch stole my pen! She is such a scriptomaniac.

scriptomaniac by Rondalicious October 23, 2011