principium

bottom line component cornerstone element factor foundation law principle

ABCs axiom basis constituent guts heart nitty-gritty rudiment rule theorem

brass tacks coal-and-ice rock bottom sine qua non

cowardice fear

addition auxiliary extra subordinate trivia

proposal regulation rule

assumption axiom base canon cause criterion exigency formula foundation fundamental generalization ground guide maxim origin postulate precept proposition reason source theorem truth usage

assumption basis convention doctrine ethic foundation fundamental precept proposition regulation rule truth

axiom canon criterion dictum dogma form formula ground maxim origin postulate prescript source theorem usage verity

golden rule

ambiguity effect end result

axiom

assumption belief deduction dictum doctrine formula fundamental law postulate principle proposition rule statement theory thesis

addition certainty disbelief fact proof reality