say it: in-SUHF-ur-uh-buhl
insufferable is an adjective meaning "unbearably arrogant or conceited". It carries 2 recorded senses.
too extreme to bear
“the insufferable heat of August in a New York apartment with no air conditioning”
Definitions, synonyms and semantic relations for insufferable come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.