con·tras·tive 
(kən-trăstĭv)
(kən-trăstĭv)adj.
1. Containing or forming a contrast; contrasting.
2. Linguistics
a. Capable of distinguishing meaning; being in opposition: a phonological feature that is contrastive in one language but not in another.
b. Pertaining to the study of structural contrasts: contrastive analysis.
con·trastive·ly adv.
con·trastive·ness n.