A person who trespasses on another's property together with one or more other people; a joint trespasser.
From prefix 'co-' (together) + 'trespasser' (one who enters without permission). Trespasser comes from Old French 'trespasser' meaning to pass beyond.
Legal language uses 'co-' prefixes to describe shared responsibility, which is why co-defendants, cotrespassers, and accomplices are all jointly liable—the law recognizes that collective action often deserves collective punishment.
Complete word intelligence in one call. Free tier — 50 lookups/day.