sidekick

Noun

A close companion or subordinate assistant.
a close friend who accompanies his buddies in their activities
An assistant to another person, especially to a superior or more important person.
In literature, theatre, etc., a good foil of the protagonist, a character who helps emphasize the traits of the main character.

Examples

Every great Scrabble player needs a dictionary as their reliable SIDEKICK.

Origin / Etymology

From side + kick, which in the late 19th and early 20th century was a slang term for the front side pocket of a pair of trousers, known as the pocket safest from theft. Thus, by analogy, a "side-kick" was a person's closest companion.

Synonyms

brother, buddy, chum, crony, pal, acolyte, deuteragonist, pupil, wingman

Antonyms

mentor

Scrabble Score: 19

sidekick: valid Scrabble (US) TWL Word
sidekick: valid Scrabble Word in Merriam-Webster MW Dictionary
sidekick: valid Scrabble Word in International Collins CSW Dictionary

Words With Friends Score: 20

sidekick: valid Words With Friends Word