Etymology: from inside + -er
- A person who has special knowledge about the inner workings of a group, organization, or institution.
- 1923, "http://www.time.com/time/magazine/article/0,9171,716015,00.html "Big Board" Failures," Time, 2 Jul.,
- :Heavy losses were sustained in Simms Petroleum, which took a greater toll from supposed "Wall Street insiders" than from the general public.
- 2007, Jonathan Clayton, "http://www.timesonline.co.uk/tol/news/world/africa/article3070220.ece Profile: Zuma charmed wives and a nation," Times of London (UK), 19 Dec.,
- :He is also an astute ANC who spent ten years on Robben Island alongside Nelson Mandela and the other "grandees" of the movement.
- A person who is within an enclosed space.
- 1849, w:Herman_Melville, Herman Melville, Redburn: His First Voyage, ch. 33,
- :To the , the ceiling is like a small firmament twinkling with astral radiations.
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