We found 29 dictionaries that define the word youngster:

General (24 matching dictionaries)

1. youngster: Longman Dictionary of Contemporary English
2. youngster: Merriam-Webster
3. youngster: Oxford Learner's Dictionaries
4. youngster: American Heritage Dictionary of the English Language
5. youngster: Collins English Dictionary
6. youngster: Vocabulary.com
7. Youngster, youngster: Wordnik
8. youngster: Cambridge Advanced Learner's Dictionary
9. youngster: Wiktionary
10. youngster: Webster's New World College Dictionary, 4th Ed.
11. youngster: The Wordsmyth English Dictionary-Thesaurus
12. youngster: Infoplease Dictionary
13. youngster: Dictionary.com
14. Youngster: Wikipedia, the Free Encyclopedia
15. Youngster: Online Plain Text English Dictionary
16. youngster: Webster's Revised Unabridged, 1913 Edition
17. youngster: Rhymezone
18. youngster: AllWords.com Multi-Lingual Dictionary
19. youngster: FreeDictionary.org
20. youngster: Mnemonic Dictionary
21. youngster: TheFreeDictionary.com
22. youngster: Cambridge Essential American English Dictionary

Business (2 matching dictionaries)

23. youngster: Legal dictionary
24. youngster: Financial dictionary

Computing (1 matching dictionary)

25. youngster: Encyclopedia

Medicine (1 matching dictionary)

26. youngster: Medical dictionary

Slang (1 matching dictionary)

27. youngster: Urban Dictionary

(Note: See youngsters as well.)

Definitions from Wiktionary ( ) ▸ noun:  A young person. Similar: minor, child, kid, tiddler, tike, tyke, nipper, shaver, fry, nestling, more... Opposite: adult, elder Types: tot, infant, baby, child, kid, minor, teen, youth, more... Phrases: coop youngster, spotted forest youngster, bleating farm youngster, more... Adjectives: old, bright, average, healthy, eyed, precocious, looking, black, handsome, haired, tall Colors:     bright blue,     lime green,     sunshine yellow,     candy pink,     sky blue, more... ▸ Words similar to youngster ▸ Usage examples for youngster ▸ Idioms related to youngster ▸ Wikipedia articles (New!) ▸ Popular adjectives describing youngster ▸ Words that often appear near youngster ▸ Rhymes of youngster ▸ Invented words related to youngster