adjective
- not guided by conscience; unscrupulous.
- not in accordance with what is just or reasonable: unconscionable behavior.
- excessive; extortionate: an unconscionable profit.
adjective
- unscrupulous or unprincipledan unconscionable liar
- immoderate or excessiveunconscionable demands
adj.1560s, “showing no regard for conscience,” from un- (1) + now rare conscionable “conscientious.” Related: Unconscionably.