unendurable

adjective

1. capable of being endured; bearable; tolerable.

adjective

1. not able to be undergone or tolerated; insufferable

adj.1620s, from un- (1) “not” + endurable. Related: Unendurably. adj.c.1600, “able to endure,” from endure + -able. Meaning “able to be endured” is from c.1800. Related: Endurably.