It does not bother me; I am not concerned. / It was no problem; not at all; you're welcome. / Do not worry, I will do it.

There is no need for concern; there isn't a serious problem.

(medicine) Users of medical or psychiatric services who are not suffering from any diagnosable disease.

(idiomatic) One who worries excessively or unnecessarily.

Alternative spelling of worry wart

Indicates to the interlocutor not to worry about something.

A permanent wrinkle on the forehead.

plural of worry line

(card games) In a patience or solitaire game, to return a card from a foundation to the tableau.

Indicates that the speaker is worried.