nonantagonistic

adjective
non·​an·​tag·​o·​nis·​tic | \ ˌnän-(ˌ)an-ˌta-gə-ˈni-stik How to pronounce nonantagonistic (audio) \

Definition of nonantagonistic

: not marked by or resulting from opposition or hostility : not antagonistic a nonantagonistic relationship Their interaction with the local population is nonantagonistic, although few friendships have been forged.— David B. Cole

First Known Use of nonantagonistic

1850, in the meaning defined above

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