insider

nounattested in dialogue

United States//ɪnˈsaɪdɚ//

A person who has special knowledge about the inner workings of a group, organization, or institution.

noun

1
A person who has special knowledge about the inner workings of a group, organization, or institution.
Near-synonyms: initiate, old hand, habitué
Heavy losses were sustained in Simms Petroleum, which took a greater toll from supposed "Wall Street insiders" than from the general public.
He is also an astute ANC insider who spent ten years on Robben Island alongside Nelson Mandela and the other “grandees” of the movement.
In a thread called “Calm Before the Storm”, and in subsequent posts, Q established his legend as a government insider with top security clearance who knew the truth about a secret struggle for power involving Donald Trump, the “deep state”, Robert Mueller, the Clintons, pedophile rings, and other stuff.
2
A person who is within an enclosed space.
To the insider, the ceiling is like a small firmament twinkling with astral radiations.

Etymology

Etymology tree Middle English ynneside English inside Proto-Indo-European *-yósder. Proto-Italic *-āzios Latin -āriusnom. Latin -āriusbor. Proto-Germanic *-ārijaz Proto-West Germanic *-ārī Old English -ere Middle English -ere English -er English insider From inside + -er.

Forms

plural: insiders

Insert · A key that when pressed switches between the overtype mode…inserted · Attached to or growing out of some part.inside · The interior or inner part.

insider · A person who has special knowledge about the inner workings of a group, organization, or institution.

insides · guts, intestines, innards insight · A sight or view of the interior of anything; a deep…insignificant · Not significant; not important, inconsequential, or having no…

The neighbouring pages — Alphabetical order follows the rules of the language, not byte values: an accent decides only between two otherwise identical words, and Spanish files Ñ as a letter of its own.