We found 29 dictionaries that define the word childish:

General (24 matching dictionaries)

1. childish: Merriam-Webster
2. childish: Oxford Learner's Dictionaries
3. childish: American Heritage Dictionary of the English Language
4. childish: Collins English Dictionary
5. childish: Vocabulary.com
6. Childish, childish: Wordnik
7. childish: Cambridge Advanced Learner's Dictionary
8. childish: Wiktionary
9. childish: Webster's New World College Dictionary, 4th Ed.
10. childish: The Wordsmyth English Dictionary-Thesaurus
11. childish: Infoplease Dictionary
12. Childish, childish: Dictionary.com
13. childish: Cambridge Essential American English Dictionary
14. Childish: Online Plain Text English Dictionary
15. childish: Webster's Revised Unabridged, 1913 Edition
16. childish: Rhymezone
17. Childish: AllWords.com Multi-Lingual Dictionary
18. childish: Webster's 1828 Dictionary
19. childish: FreeDictionary.org
20. childish: Mnemonic Dictionary
21. childish: TheFreeDictionary.com
22. childish: Longman Dictionary of Contemporary English

Business (2 matching dictionaries)

23. childish: Legal dictionary
24. childish: Financial dictionary

Computing (1 matching dictionary)

25. childish: Encyclopedia

Medicine (1 matching dictionary)

26. childish: Medical dictionary

Slang (1 matching dictionary)

27. childish: Urban Dictionary

(Note: See childishly as well.)

Definitions from Wiktionary ( ) ▸ adjective:  Immature in thought or behaviour. ▸ adjective:  belonging to or suitable for a child. Similar: infantile, immature, childlike, babyish, kidlike, infantlike, childhoodlike, kidly, juvenile, infantine, more... Opposite: mature, adult, grown-up, sophisticated Types: immature, childlike, juvenile, puerile, more... Phrases: Childish Gambino discography, Billy Childish, childish anger, childish play, childish beauty, more... Adjectives: french, first, least, childlike, old Colors:     bright pink,     sky blue,     lemon yellow,     lime green,     lavender, more... ▸ Words similar to childish ▸ Usage examples for childish ▸ Idioms related to childish ▸ Wikipedia articles (New!) ▸ Popular nouns described by childish ▸ Words that often appear near childish ▸ Rhymes of childish ▸ Invented words related to childish