insider
UK[ɪnˈsaɪdə]US[ɪnˈsaɪdər]
n
a person who is a member of a group or organization and therefore has special knowledge or influence.
n
a person who buys or sells stocks using secret information about a company, which is illegal.
Morpheme Breakdown
in
side
er
in
inside
side
position
er
person who
Etymology
the word "insider" is a transparent english compound formed from native germanic elements. its first element, "in", is a core preposition of position dating back to proto-germanic and proto-indo-european. the second element, "side", originates from old english, referring to the flank or lateral part of something, which evolved to signify a general area or position. the combination "inside" emerged in middle english, literally meaning "on the inner side". the agent suffix "-er" was then appended, following a highly productive english pattern, to create a noun meaning "one who is on the inside". the term's logic is purely spatial, evolving from a literal description of physical location to a metaphorical one denoting membership and privileged access to information within a closed group or system.
Analysis
Structure: in (inside) + side (position) + er (person who)
- in: from old english "in", meaning "in, into, within". a preposition/adverb indicating position or location.
- side: from old english "sīde", meaning "flank, side, long part of something". in this compound, it denotes a spatial area or position.
- er: from old english "-ere", an agent noun suffix denoting "a person who does or is associated with something".
Examples
the announcement came as a surprise to outsiders, but was expected by company insiders.
he was accused of being an insider in the stock trading scandal.
the journalist relied on an insider to leak the confidential documents.