interloper Synonyms

intruder trespasser itinerant person crasher backseat driver noncitizen arriviste visitor unknown trespassing thruster stranger squatter drifter kibitzer gawker unwanted visitor intruders party crasher floaters new arrival snooper penetrator odd one out infiltrator gatecrasher foreign body buttinsky refugee pusher infringer incomer immigrant guest encroacher emigrant discloser busybody burglar boarder alienage alien interferer intermeddler prowler outsider outlander obtruder nonmember newcomer