stick at

Some one in the Genji Monogatari is said to have collected a crowd of evil-looking Yamabushi, desperate, stick-at-nothing fellows.

I'm too voluminous—I'm a boiler-over, not a simmering stick-at-it.

They will not, however, have the more methodical stick-at-it quality of those whose fingers are found firm and stiff.

A reckless joy in the doctrine of stick-at-nothing to serve the end.