indefinable[adjective]Synonyms: inexpressible, impalpable, indescribable
Antonyms: definable
[TahlilGaran] English Synonym Dictionary ▲
in‧de‧fi‧na‧ble /ˌɪndɪˈfaɪnəb
əl◂/
adjective an indefinable feeling, quality etc is difficult to describe or explain:
She felt an indefinable sadness.—indefinably adverb [TahlilGaran] Dictionary of Contemporary English ▲