Simple Definition of passerby

from our Learner's Dictionary

passerby

noun

ˌpæsɚˈbaɪ

British ˌpɑːsəˈbaɪ

plural passersby ˌpæsɚzˈbaɪ

British ˌpɑːsəzˈbaɪ

: a person who walks by something on a street or road

A passerby saw the accident and stopped to help.

Passersby were asked if they were registered to vote.

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“Passerby.” Merriam-Webster.com Simple Definition, Merriam-Webster, https://www.merriam-webster.com/simple/passerby. Accessed 18 Apr. 2026.

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