interloperyoudaoicibaDictYouDict[interloper 词源字典]
interloper: [16] An interloper is literally someone who ‘runs between’. The word was coined in English, but based on Dutch loper, a derivative of lopen ‘run’ (to which English leap is related). It originally denoted someone who engaged in trade without authorization, and only in the 17th century took on its present-day meaning ‘interfering outsider’.
=> leap[interloper etymology, interloper origin, 英语词源]
interloper (n.)youdaoicibaDictYouDict
1590s, enterloper, "unauthorized trader trespassing on privileges of chartered companies," probably a hybrid from inter- "between" + -loper (from landloper "vagabond, adventurer," also, according to Johnson, "a term of reproach used by seamen of those who pass their lives on shore"); perhaps a dialectal form of leap, or from Middle Dutch loper "runner, rover," from lopen "to run," from Proto-Germanic *hlaupan "to leap" (see leap (v.)). General sense of "self-interested intruder" is from 1630s.