keep at

verb

1. intr to persevere with or persist in
2. tr to constrain (a person) to continue doing (a task)

Example Sentences

And you have to keep at it, especially in a city notable for its lack of follow-through in addressing major problems and a neighborhood largely made up poor undocumented immigrants who struggle for survival while trying to avoid run-ins with law enforcement and gangs.

From Los Angeles Times

“If they are not getting it, I just can’t keep at them if they don’t get it,” Lue said.

From Los Angeles Times

The retailer said customers signed up to Asos Premier will get free returns if they keep at least £15 of their order.

From BBC

Having an extra-thick uterine lining, as is the case in humans, helps the female body keep at bay the tentacle-like villi of the invasive human placenta should pregnancy occur.

From Slate

Speaking to BBC Radio 4's Today about his desire to continue acting, Sir Ian said: "I shall just keep at it as long as the legs and the lungs and the mind keep working."

From BBC