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come-outer

American  
[kuhm-ou-ter] / ˌkʌmˈaʊ tər /

noun

Informal.

  1. an outspoken or very active supporter of a cause, especially a reformer or a social activist.

Etymology

Origin of come-outer

1830–40, come out + -er 1

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.