undifferentiated
[adjective]
Synonyms: like, agnate, akin, alike, analogous, comparable, consonant, corresponding, parallel, similar

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Antonyms: differentiated

[TahlilGaran] English Synonym Dictionary ▲

un‧dif‧fer‧en‧ti‧at‧ed /ˌʌndɪfəˈrenʃieɪtəd, ˌʌndɪfəˈrenʃieɪtɪd/ adjective
something which is undifferentiated is not split into parts, or has different parts but you cannot tell the difference between them:
shows aimed at large undifferentiated groups of people
Colonial officials tended to see Indian society as an undifferentiated whole.

[TahlilGaran] Dictionary of Contemporary English ▲