postulate

(noun) (logic) a proposition that is accepted as true in order to provide a basis for logical reasoning. Synonyms: posit.

(verb) maintain or assert. Synonyms: contend. Example: "He contended that communism had no future."

(verb) take as a given; assume as a postulate or axiom. Synonyms: posit. Example: "He posited three basic laws of nature."

(verb) require as useful, just, or proper. Synonyms: necessitate, ask, need, require, take, involve, call for, demand. Examples: "It takes nerve to do what she did." "Success usually requires hard work." "This job asks a lot of patience and skill." "This position demands a lot of personal sacrifice." "This dinner calls for a spectacular dessert." "This intervention does not postulate a patient's consent."