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thumb-sucker

American  
[thuhm-suhk-er] / ˈθʌmˌsʌk ər /

noun

  1. a person who habitually sucks a thumb.

Other Word Forms

  • thumb-sucking noun

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

She has always been a thumb-sucker, and as school years came around, we expected she would wean off it.

From Slate • Jun. 17, 2019

Nor am I a knuckle-cracker, a nail-biter, or a thumb-sucker.

From Slate • Dec. 31, 2012

I had one thumb-sucker and two non-thumb-suckers, and I stupidly and naively forgot I was in front of a lot of cameras.

From Time Magazine Archive

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.