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passerby

American  
[pas-er-bahy, -bahy, pah-ser-] / ˈpæs ərˈbaɪ, -ˌbaɪ, ˈpɑ sər- /
Or passer-by

noun

plural

passersby

  1. a person passing by.

Etymology

Origin of passerby

1560–70; pass by + -er 1, with postposing of the particle

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.