psychopath ˈsʌɪkəpaθ/ noun a person suffering from chronic mental disorder with abnormal or violent social behaviour. synonyms: madman/madwoman, mad person, deranged person, maniac, lunatic, psychotic, sociopath; More informal an unstable and aggressive person. - "Are you the omegle girl? It's Darth Vader (-:" "I guess so?" "It's not a guess it's either a yes or no" "jeez chill out Darth Vader"