We found 28 dictionaries that define the word proactive:

General (22 matching dictionaries)

1. proactive: Longman Dictionary of Contemporary English
2. proactive: Merriam-Webster
3. proactive: Oxford Learner's Dictionaries
4. proactive: American Heritage Dictionary of the English Language
5. proactive: Collins English Dictionary
6. proactive: Vocabulary.com
7. Proactive, proactive: Wordnik
8. proactive: Cambridge Advanced Learner's Dictionary
9. proactive: Wiktionary
10. proactive: Webster's New World College Dictionary, 4th Ed.
11. proactive: Infoplease Dictionary
12. proactive: Dictionary.com
13. ProActive, Proactive: Wikipedia, the Free Encyclopedia
14. proactive: Rhymezone
15. proactive: AllWords.com Multi-Lingual Dictionary
16. proactive: FreeDictionary.org
17. proactive: Mnemonic Dictionary
18. Proactive: The Word Detective
19. proactive: TheFreeDictionary.com
20. proactive: Wikimedia Commons US English Pronunciations

Business (3 matching dictionaries)

21. MoneyGlossary.com (No longer online)
22. Dictionary of Management Jargon (No longer online)
23. BusinessDictionary.com (No longer online)

Computing (1 matching dictionary)

24. proactive: Encyclopedia

Medicine (1 matching dictionary)

25. proactive: Merriam-Webster Medical Dictionary

Slang (1 matching dictionary)

26. Proactive: Urban Dictionary

(Note: See proactives as well.)

Definitions from Wiktionary ( ) ▸ adjective:  Acting in advance to deal with an expected change or difficulty Similar: preactive, proadaptive, preemptive, pre-action, foreprepared, preactivity, forethoughtful, proleptic, preadaptive, early, more... Opposite: reactive, passive, inactive, unresponsive Phrases: proactive interference, proactive inhibition, proactive measures, Proactive maintenance, proactive decision, more... Colors:     orange,     red,     yellow,     lime green,     sky blue, more... ▸ Words similar to proactive ▸ Usage examples for proactive ▸ Idioms related to proactive ▸ Wikipedia articles (New!) ▸ Popular nouns described by proactive ▸ Words that often appear near proactive ▸ Rhymes of proactive ▸ Invented words related to proactive