Don't worry! Fret not—it's really not a big deal. Fret not, I'll take care of it.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
Inf. Don't worry!; Do not fret about it! Mary: Oh, look at the clock! I'm going to be late for my appointment! Bob: Fret not! I'll drive you. "Fret not!" said Sally. "We're almost there!"
See also: fret
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.