1. to cheat or swindle someone
Usage: informal
2. to waste time or move aimlessly
Usage: informal

Examples

• He diddles his customers by overcharging for repairs.
• The salesman diddles people into buying unnecessary warranties.
• She diddles around the house instead of doing her homework.
• Stop diddling with that pen and pay attention.
• The con artist diddles tourists out of their money.
• He diddles away the afternoon playing video games.