Monstrous is a related term of unendurable.
As adjectives the difference between monstrous and unendurable
is that monstrous
is hideous or frightful while unendurable
is not to be endured; intolerable.
hideous or frightful
- So bad a death argues a monstrous life.
- a monstrous height
freakish or grotesque
* John Locke
- a monstrous ox
* Jeremy Taylor
- a monstrous birth
of, or relating to a mythical monster; full of monsters
- He, therefore, that refuses to do good to them whom he is bound to love is unnatural and monstrous in his affections.
(obsolete) marvellous; strange
- Where thou, perhaps, under the whelming tide / Visitest the bottom of the monstrous world.
* See also