As adjectives the difference between unbearable and agonizing
is that unbearable is so unpleasant or painful as to be unendurable while agonizing is causing agony.
As a verb agonizing is
present participle of lang=en.
As a noun agonizing is
the act of one who agonizes.
unbearable
English
Adjective
(
en adjective)
so unpleasant or painful as to be unendurable
Synonyms
* insufferable
* unsupportable
agonizing
English
Adjective
(
en adjective)
Causing agony.
- It was an agonizing twenty-minute wait for the results.
Verb
(head)
Noun
(
en noun)
The act of one who agonizes.
* 1918 , W. H. Hudson, Far Away and Long Ago
- I never breathed a word of my doubts and mental agonizings to my mother; I spoke to her only of my bodily sufferings; yet she knew it all, and I knew that she knew.