abrasively
Adverb
Meaning
In an abrasive manner; in a rude and unkind manner; acting in a way that may hurt other people's feelings.
Hardly; roughly; in a rough manner.
Source: en.wiktionary.orgSynonyms
rude
caustically
abradant
brusquely
aggressively
sanding
acrimoniously
unfeelingly
luridly
acidly
acridly
grindingly