Anti-social behaviour is defined as 'behaviour by a person which causes, or is likely to cause, harassment, alarm or distress to persons not of the same household as the person'.
Diffinnir ymddygiad gwrthgymdeithasol fel ymddygiad gan berson sy'n achosi aflonyddu, braw neu ofid i bersonau nad ydynt yn byw ar yr un aelwyd â'r person, neu sy'n debygol o achosi hynny.