English

Definition of interloper noun from the Oxford Advanced Learner's Dictionary

 

interloper

 noun
noun
BrE BrE//ˈɪntələʊpə(r)//
 
; NAmE NAmE//ˈɪntərloʊpər//
 
 
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a person who is present in a place or a situation where they do not belong synonym intruder She felt like an interloper in her own family. Word Origin late 16th cent. (denoting an unauthorized trader trespassing on the rights of a trade monopoly): from inter- ‘amid’ + -loper as in archaic landloper ‘vagabond’ (from Middle Dutch landlooper).
See the Oxford Advanced American Dictionary entry: interloper