形容词

1. 不堪忍受的；无法容忍的；难以承受的
If you describe something as unbearable, you mean that it is so unpleasant, painful, or upsetting that you feel unable to accept it or deal with it.

1. incapable of being put up with

e.g. an intolerable degree of sentimentality

Synonym: intolerableunendurable