IPA: /ˈɡreɪtɪŋli/
KK: /ˈɡreɪtɪŋli/
In a way that is harsh or irritating to the senses.
The music played gratingly, making it hard to concentrate.
Gratingly → It is formed from "grate" (from Old French *grater*, meaning to scrape or scratch) and "-ingly" (a suffix used to form adverbs). The word "gratingly" describes something that is done in a manner that causes irritation or annoyance, often by scraping or scratching sounds.
Think of the action of 'scraping' ('grate') that can be irritating, and remember that 'gratingly' describes something done in an annoying way.