Trespasser/ˈtrespæsər/ Definition 1 of 2Pro Tip 1/3Legal Context Often used when someone breaks property law by entering without permission. A 'No Trespassing' sign warns potential trespassers. Pro Tip 2/3Negative Connotation Implies wrongdoing or violation of someone's space. The owner viewed the lost hiker as a trespasser. Pro Tip 3/3Privacy Issues Typically associated with the invasion of private areas or homes. The celebrity's home was often troubled by trespassers.