What Is the Root Word for Insufferable?

"intolerable, not to be endured," early 15c., from in- (1) "not, opposite of" + sufferable.

What does the prefix insufferable mean?

: very bad or unpleasant : too unpleasant to deal with or accept. See the full definition for insufferable in the English Language Learners Dictionary. insufferable. adjective. in·​suf·​fer·​able | \ in-ˈsə-fə-rə-bəl \

Is Unsufferable a word?

So unpleasant or painful as not to be endured or tolerated: impossible, insufferable, insupportable, intolerable, unbearable, unendurable, unsupportable.