Upper-Intermediate (B2)
IPA: /ɪnˈsʌfərəbli/
KK: /ɪnˈsʌfərəbli/
Definition
In a way that is too extreme or difficult to bear; intolerably.
Example
The heat was insufferably high during the summer months.
Conversation

Did you hear how insufferably rude he was at the party last night?

Yeah, it was really shocking to see him act that way.

I can't believe he thought it was okay to speak to everyone insufferably like that.

Honestly, I think he just doesn't realize how he comes across.
Synonyms & Antonyms
Synonyms
unbearably
intolerably
excessively
Antonyms
tolerably
bearably
moderately
Root Explanation
Insufferably → It is formed from "in-" (meaning not) and "sufferable" (from Latin "sufferabilis", meaning able to be endured). The word "insufferably" means in a manner that cannot be endured or tolerated.
Memory Tip
Think of 'not' being able to 'endure' something — that's why insufferably means something that is unbearable.
Visually Confused Words
unsufferably
sufferably
unsufferable
sufferable