Emphasizes an extreme level of a negative trait, often used to criticize. His laziness was insufferably disrupting the team's progress.
Pro Tip 2/3
Hyperbolic Tone
Usually an exaggeration, not meant to be taken literally, to express strong feelings. The heat today is insufferably high, I can't even think straight.
Pro Tip 3/3
Subjective Experience
Expresses a personal reaction to something others might not find as extreme. She found the perfume insufferably strong, while others barely noticed it.