We found 4 dictionaries that define the word thumb-sucking:

General (3 matching dictionaries)

1. thumb-sucking: Wordnik
2. thumb-sucking: Dictionary.com
3. thumb-sucking: TheFreeDictionary.com

Medicine (1 matching dictionary)

4. thumb-sucking: Merriam-Webster Medical Dictionary

▸ Words similar to thumb-sucking ▸ Usage examples for thumb-sucking ▸ Idioms related to thumb-sucking ▸ Wikipedia articles (New!) ▸ Words that often appear near thumb-sucking ▸ Rhymes of thumb-sucking ▸ Invented words related to thumb-sucking