We found 21 dictionaries that define the word tranquillize:

General (17 matching dictionaries)

1. tranquillize: Longman Dictionary of Contemporary English
2. tranquillize: Merriam-Webster
3. tranquillize: Oxford Learner's Dictionaries
4. tranquillize: Collins English Dictionary
5. tranquillize: Vocabulary.com
6. tranquillize: Wordnik
7. tranquillize: Cambridge Advanced Learner's Dictionary
8. tranquillize: Wiktionary
9. tranquillize: Dictionary.com
10. Tranquillize: Online Plain Text English Dictionary
11. tranquillize: Rhymezone
12. Tranquillize: AllWords.com Multi-Lingual Dictionary
13. tranquillize: FreeDictionary.org
14. tranquillize: Mnemonic Dictionary
15. tranquillize: TheFreeDictionary.com

Business (1 matching dictionary)

16. tranquillize: Legal dictionary

Computing (1 matching dictionary)

17. tranquillize: Encyclopedia

Medicine (2 matching dictionaries)

18. tranquillize: Merriam-Webster Medical Dictionary
19. tranquillize: Medical dictionary

(Note: See tranquillizes as well.)

Definitions from Wiktionary ( ) ▸ verb:  Alternative spelling of tranquilize [(transitive) To calm (a person or animal) or put them to sleep using a tranquilizer dart.] Similar: tranquilize, quieten, calm, quiet, sedate, still, calm down, lull, tranquilise, anaesthetize, more... Opposite: agitate, stimulate, excite, arouse, energize ▸ Words similar to tranquillize ▸ Usage examples for tranquillize ▸ Idioms related to tranquillize ▸ Wikipedia articles (New!) ▸ Words that often appear near tranquillize ▸ Rhymes of tranquillize ▸ Invented words related to tranquillize