To make better; improve
To modify is to make a change or alteration.
To alter or edit (a text).
To correct is defined as to remove errors or to point out errors.
To raise to a more desirable or more excellent quality or condition; make better:
To transfer oneself to another place.
(Intransitive) To become smooth, as from friction; to receive a gloss; to take a smooth and glossy surface.
To a greater extent or degree:
Find another word for retouch. In this page you can discover 9 synonyms, antonyms, idiomatic expressions, and related words for retouch, like: touch up, amend, modify, revise, correct, improve, repair, polish and better.