simple past tense and past participle of beg to differ

plural of difference set

A great or insurmountable difference.

(idiomatic) To do things in one's own way regardless of societal norms and conventional expectations.

Alternative form of march to the beat of a different drum

(algebra) The identity x²-y²=(x+y)(x-y), that holds for all real numbers.

(set phrase) A linguistic or conceptual distinction which is of no practical importance or which has no effect on meaning; a perceived difference where there is no actual difference.

(set theory, of two sets A and B) The set that contains exactly those elements belonging to A but not to B; the relative complement of B in A.

Almost, nearly, the specified attribute, to the extent that the lack of attainment of the attribute does not matter.

plural of distinction without a difference