ockerism

(AU, slang) (a boorish or uncultivated Australian).

A rare slang nominalization meaning the behavior characteristic of a jerk -- selfish, inconsiderate, or obnoxious conduct as a habitual pattern. The '-ism' suffix gives it a pseudo-ideological weight, as if being a jerk were a coherent philosophy. Typically used sarcastically to mock someone's consistent rudeness rather than to describe a genuine ideology. Most effective when applied to a repeated pattern, not a single bad moment.

Scots legal Scots from 'ocker' (usury), ultimately from Old Norse 'okr' (increase, profit). An ockerer charged ruinous interest on loans at a time when usury was both illegal and morally condemned; the term carried strong contempt in Scottish courts.

(slang, UK, Ireland, Commonwealth) a person perceived as obnoxious or unintelligent.