thumb-sucker

noun

thumb-suck·​er ˈthəm-ˌsək-ər How to pronounce thumb-sucker (audio)
: an infant or young child that habitually sucks a thumb

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thumb-sucker

thumb-sucking

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“Thumb-sucker.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/thumb-sucker. Accessed 15 Dec. 2024.

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