WordWeb Online

1. Be lazy or idle
   "Her son is just arsing around around all day"
   - bum, bum around, bum about, arse about [Brit, Cdn], loaf, frig around, waste one's time, lounge around, loll, loll around, lounge about
    
2. Indulge in horseplay
   "Enough arsing around--let's get back to work!"
   - horse around, fool around, fool, arse about [Brit]

Derived forms: arses around, arsed around, arsing around

Type of: idle, jest, joke, laze, play, slug, stagnate