kick in

When fathers hold and play with their children, oxytocin and prolactin kick in, priming them for bonding.

This is a guy who has his son-in-law clean his eyeglasses, for crying out loud.

Her travel clique has been known to arrive at an airport, bags packed, passport-in-hand, within hours of spotting a deal.

Earl Spencer adds, “Effectively, my great-grandfather sold his children to his father-in-law.”

The lack of a gun is not likely to be a major problem for close-in air-to-air dogfights against other jets.

The latter trod on the toes of the former, whereupon the former threatened to "kick out of the cabin" the latter.

Such throats are trying, are they not?In case one catches cold; Ah, yes!

The commander-in-chief still kept him attached to the headquarter staff, and constantly employed him on special service.

So far Murat had always held subordinate commands; his great ambition was to become the commander-in-chief of an independent army.

Their jurisdictions overlapped and the Gascon would play second fiddle to no one save to his great brother-in-law.