bitch
The newspaper gossip columnist is notorious for commenting bitchily on celebrities' style choices.
She never worried about hurting people's feelings, and relished being bitchily honest.
Her favourite reality TV show is about wealthy housewives who act bitchily toward each other.
He bitchily asked whether she had just woken up or whether her hair had been styled that way.

SMART Vocabulary: related words and phrases

Unkind, cruel & unfeeling
acerbic
acerbically
acerbity
acidly
anti-cruelty
cruel
cruelly
cruelty
cruelty to someone/something
cutthroat
meanness
mental cruelty
merciless
mercilessly
mordant
trenchant
trenchantly
uncharitable
uncharitably
unchristian