• synonyms


  1. a person who habitually sucks a thumb.
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Related formsthumb-suck·ing, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for thumb-sucking

Historical Examples

  • But thumb-sucking we do not consider as wrong, merely as undesirable.

    Concerning Children

    Charlotte Perkins Gilman

  • Biting the finger nails may be stopped by the use of the same bitter remedies as are used in thumb-sucking.

  • One letter attributes it to the habit of thumb-sucking in infancy—which certainly ought to be checked.

  • It is by this road that many children go from thumb-sucking to masturbation.