stick at
Upper Intermediate (B2)informal
Keep trying at something hard and don't quit.
"Learning a language is hard, but if you stick at it, you'll get there."
Hear it in context

The Bear and the Bee - US English accent (TheFableCottage.com)
The Fable Cottage · 2:01
He swings his stick at the beehive.

15 ENGLISH PHRASAL VERBS: stick up, stick out, stick to, stick with...
Adam’s English Lessons · engVid · 5:14
But, when we say stick at something,

He Thinks He’s Invited to a White Party Unaware He’s Being Auctioned as a Slave
Movie Recaps · 9:58
the keys, so Jeremy swings his stick at

Zayn Creates a Sculpture of Himself | Vanity Fair
Vanity Fair · 0:46
yeah, I'm going to stick at this.

This Is The Most Expensive Range Rover Ever Built! | 4K
Top Gear · 2:15
than you can shake a bespoke artisan stick at.