Meaning of “sidekick” in the English Dictionary

american-english dictionary

"sidekick" in British English

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(Definition of “sidekick” from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)

"sidekick" in American English

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sidekicknoun [ C ]

us /ˈsɑɪdˌkɪk/ infml

a friend, or a person who works with someone more important:

The course will focus on fictional master sleuth Sherlock Holmes and his sidekick Dr. Watson.

(Definition of “sidekick” from the Cambridge Academic Content Dictionary © Cambridge University Press)