#1 contrastive s. [incompatible] of words so related that one contrasts with the other; "'rich' and 'hard-up' are contrastive terms". wn
#2 contrastive s. [contrasting] strikingly different; tending to contrast; "contrasting (or contrastive) colors". wn
#3 contrastive s. syntactically establishing a relation of contrast between sentences or elements of a sentence; "disjunctive conjunctions like 'but', 'or', or 'though' serve a contrastive function". wn
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