1. unutterable的反义词

1. 非语言所能表达的：unusually /显着地/异常地/ | unutterable /非语言所能表达的/ | unutterably /非语言所能表达地/

2. 不可言传的：vulnerable 易受伤的,弱小的;易受...攻击的 | unutterable 不可言传的 | desirable 称心的,合意的,理想的

1. （尤指不好的事情）无以名状的，难以形容的，莫名的
    You can use unutterable to emphasize that something, especially a bad quality, is great in degree or intensity.

    e.g. I am at the beginning of a new and unutterable loneliness.
           我再次陷入莫名的孤独寂寞中。
    e.g. ...unutterable rubbish.
           一派胡言

1. very difficult to pronounce correctly

    e.g. an unpronounceable foreign word
           unutterable consonant clusters

    Synonym: unpronounceable

2. defying expression or description

    e.g. indefinable yearnings
           indescribable beauty
           ineffable ecstasy
           inexpressible anguish
           unspeakable happiness
           unutterable contempt
           a thing of untellable splendor

    Synonym: indefinableindescribableineffableunspeakableuntellable

3. too sacred to be uttered

    e.g. the ineffable name of the Deity

    Synonym: ineffableunnameableunspeakable