Not able to be suffered, difficult or impossible to endure; insufferable.(adjective)
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Use "unsufferable" in a sentence
"Now that I'll be just in front of Carl's office all afternoons for the rest of the semester, I'll be truly unsufferable."
"“What an unsufferable bore that man is, and how he did talk!” the Major said."
"I only mentioned it because, as most us know by now, cedarford can be so unsufferable that it might be fun to let him know that someone was helping keep those health care costs down for the really important diseases and maladies: you know, the ones he and his loved ones have or may have."