Meanings of hardened professional in English

The eastern engineer met these hardened professional brothers cordially.

Even hardened professional villains consent to be policed.

Chulalorn's was a hardened professional army inherited from his father, while these Hengans relied mainly on citizen militia to guard their walls.

And-to remove any diffidence you may still have about lending your sympathetic aid-thatwas written by no hardened professional, but by our stenographer.

He was surprised, and a little disappointed, to find that while these Guardsmen might be hardened professional soldiers, woodsmen or scouts they certainly weren't.