Showing tough love, say

STERN

Think of how a strict teacher might speak when enforcing rules—firm but not unkind. The word describes a no-nonsense tone that demands respect.

"Showing tough love" hints at a strict or firm attitude, which is exactly what "stern" means. The word "say" is just a common crossword signal that the clue is a straightforward definition rather than a pun or wordplay. So if someone is being harsh but caring—like a parent laying down the law—they’re likely being stern.