The Oxford Thesaurus An A-Z Dictionary of Synonyms - circumstantialadj.

1) indirect, presumptive, evidential or evidentiary, interpretive, deduced, presumed, presumptive, presumable, implicative, implied, inferred, inferential: Some circumstantial evidence is very strong, as when you find a gun in the suspect's house. 2) accidental, incidental, hearsay, indirect, unimportant, adventitious, provisional, secondary, unessential, non-essential, fortuitous, chance, extraneous: Such circumstantial trivia have no bearing on the case. 3) detailed, particular, precise, explicit, specific: We cannot believe that he invented so circumstantial a narrative.