D defs.my
Entry 3 senses Webster, 1913

fool around

· fool· a·round · IPA
01 v. i. To waste time in idle pursuits; to fool{2}.
imp. & p. p. Fooled around; p. pr. & vb. n. Fooling around
  1. 1.
    To waste time in idle pursuits; to fool{2}.
  2. 2.
    To flirt or philander.
  3. 3.
    To be sexually promiscuous; to engage in sexual intercourse with more than one partner; especially, to engage in adultery; as, to fool around with another woman.
Syn. fool{2}.