Wiktionary
vb. (context transitive idiomatic English) To disapprove (of).
Usage examples of "frown at".
She glanced with a small frown at the soldiers guarding the bridge.
An expectant mother shouldn't have this kind of excitement, she decided, and she was going to tell Royce just that if he dared to even frown at her.
Chase stopped, holding the door open with one hand while he turned to frown at the boy.
Cerryl held a frown at the words, words that seemed false and calculated to irritate the High Wizard.
She tossed her hair over her shoulder and continued to frown at him.
She remembered the swim trunks he wore and lifted her head to frown at him, even though she knew he couldn't see her.
And a haughty, pale-haired Aes Sedai with a prominent chin, guiding a tall roan gelding through the crowd, cast a sharp blue-eyed frown at her as she rode by.
The Forsaken stepped back out of the arc of Rand's sword and turned his head to frown at Moiraine as she came striding through the battle, her eyes fixed on him, ignoring the screaming deaths around her.
Zaida said, not quite masking her relief, though she shot a frown at Harine.
Mat dug his hayfork into the straw and manure and gave a sidelong frown at the farmer, coming from the back of the barn with a bucket in one hand and his milking stool in the other.
Myrelle barely managed a frown at being addressed so, and it appeared an effort.