Diddle around, a term meaning to waste time or procrastinate, has a range of synonyms available for use. One synonym for diddle around is "fiddle", meaning to play around or tinker with something without purpose. Another synonym is "dawdle", which implies a lack of urgency or motivation. "Lollygag" and "loiter" both convey a sense of aimlessly idling around with no particular objective. Additionally, "procrastinate" is a specific word for postponing or delaying a task. More colloquial synonyms include "mess around", "slack off", and "waste time". Overall, numerous alternatives for diddling around are available, conveying a similar idea of wasting time with no purpose.