noncontrastive

[ non-kuh n-tras-tiv ]
/ ˌnɒn kənˈtræs tɪv /

adjective

Linguistics. in complementary distribution; in free variation.

Origin of noncontrastive

First recorded in 1960–65; non- + contrastive
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019