Define touch up (phrasal verb) and get synonyms. What is touch up (phrasal verb)? touch up (phrasal verb) meaning, pronunciation and more by Macmillan . Definition of touch up. transitive verb. 1 : to improve or perfect by small additional strokes or alterations : fix the minor and usually visible defects or damages of. 2 : to stimulate by or as if by a flick of a whip. See touch up defined for kids. touch up. phrasal verb. If you touch something up, you improve its appearance by covering up small marks with paint or another substance. .editing tools to help people touch up photos. touch up something. — phrasal verb with touch us /tʌtʃ/ verb. to improve something with small changes: I had to touch up the paint job on my car. Definition of touch up in the Idioms Dictionary. touch up phrase. What does touch up expression mean? Definitions by the largest Idiom Dictionary. Define touch up. touch up synonyms, touch up pronunciation, touch up translation, English dictionary definition of touch up. v. touched , touch·ing , touch·es v. tr. Touch-up definition, an act or instance of touching up: Her makeup needed a touch-up. See more. Touch up definition, an act or instance of touching up: Her makeup needed a touch-up. See more. . Meaning 'to get or borrow money' first recorded 1760. Usually about an hour after eating at Beto's, I am in serious need of a touch up. I beat my dick off so hard yesterday, that I needed to touch up my swass. Synonyms for touch up at Thesaurus.com with free online thesaurus, antonyms, and definitions. Find descriptive alternatives for touch up.