IPA: /ˈblɪstərɪŋli/
KK: /ˈblɪstərɪŋli/
In a way that is extremely intense or severe, often used to describe heat or criticism.
The sun was blisteringly hot during our hike.
Blisteringly → It is formed from "blister" (from Old French *blistre*, meaning a bubble or swelling on the skin) and the adverbial suffix "-ingly" (meaning in a manner of). The word "blisteringly" describes something done in a manner that is as intense or extreme as a blister, often used to convey heat or speed.
Think of a 'blister' as a painful bubble on the skin, and when something is done 'in a blistering manner,' it means it's done with extreme intensity or heat.