Synonyms of unutterable in English:

unutterable


See US English definition of unutterable

See UK English definition of unutterable

See Spanish definition of inenarrable

adjective

1‘an existence of unutterable boredom’

SYNONYMS
indescribable, beyond words, beyond description, inexpressible, unspeakable, undefinable, beggaring description, inconceivable, unthinkable, unheard of
extreme, intense, great, overwhelming
dreadful, awful, appalling, horrible, terrible, insufferable

2‘unutterable joy suffused her whole being’

SYNONYMS
marvellous, wonderful, superb, splendid, ineffable, unimaginable, profound, deep, ecstatic
ANTONYMS

mild