sidekick

UK: ˈsaɪd.kɪk | US: ˈsaɪd.kɪk

Definition
  1. n. a close companion or assistant, often subordinate to a more prominent person

  2. n. (informal) a reliable partner in an activity or endeavor

Structure
side <flank or position>kick <strike with the foot>
Etymology

The term "sidekick" originated in the early 20th century, combining "side" (referring to proximity or partnership) and "kick" (possibly from slang for a lively or dependable person). Initially used in circus or vaudeville contexts for an assistant who stood "by the side" of a performer, it evolved to describe a loyal companion or helper in broader contexts. The playful imagery of "kicking" alongside someone emphasizes camaraderie and support.

Examples
  1. Batman's trusty sidekick, Robin, always had his back.

  2. She relied on her best friend as a sidekick during the project.

  3. The comedian and his sidekick entertained the audience with witty banter.

  4. Every hero needs a loyal sidekick to share the adventure.

  5. He played the role of a sidekick in the action movie, providing comic relief.