a close friend.
a confederate or assistant.

Origin of sidekick

An Americanism dating back to 1900–05; side1 + kick Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for sidekick

Contemporary Examples of sidekick

Historical Examples of sidekick

  • It's even more interesting that his sidekick is a crooked electronics engineer or scientist.

    The Flying Stingaree

    Harold Leland Goodwin

British Dictionary definitions for sidekick



informal a close friend or follower who accompanies another on adventures, etc
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for sidekick

also side-kick, "companion or close associate," 1901, also side-kicker (1903), American English, of unknown origin. Earlier terms were side-pal (1886), side-partner (1886).

Online Etymology Dictionary, © 2010 Douglas Harper