We found 27 dictionaries that define the word opportunist:

General (21 matching dictionaries)

1. opportunist: Longman Dictionary of Contemporary English
2. opportunist: Merriam-Webster
3. opportunist: Oxford Learner's Dictionaries
4. opportunist: American Heritage Dictionary of the English Language
5. opportunist: Collins English Dictionary
6. opportunist: Vocabulary.com
7. Opportunist, opportunist: Wordnik
8. opportunist: Cambridge Advanced Learner's Dictionary
9. opportunist: Wiktionary
10. opportunist: Dictionary.com
11. opportunist: Cambridge Essential American English Dictionary
12. Opportunist: Wikipedia, the Free Encyclopedia
13. Opportunist: Online Plain Text English Dictionary
14. opportunist: Webster's Revised Unabridged, 1913 Edition
15. opportunist: Rhymezone
16. Opportunist (m), opportunist, opportunist (de): AllWords.com Multi-Lingual Dictionary
17. opportunist: FreeDictionary.org
18. opportunist: Mnemonic Dictionary
19. opportunist: TheFreeDictionary.com

Business (1 matching dictionary)

20. opportunist: Legal dictionary

Computing (1 matching dictionary)

21. opportunist: Encyclopedia

Medicine (1 matching dictionary)

22. opportunist: Merriam-Webster Medical Dictionary

Slang (1 matching dictionary)

23. opportunist: Urban Dictionary

Tech (2 matching dictionaries)

24. Dairy Glossary (No longer online)
25. Washington State Definitions and Abbreviations of Vetrinary Terms (No longer online)

(Note: See opportunism as well.)

Definitions from Wiktionary ( ) ▸ noun:  Someone who takes advantage of any opportunity to advance their own situation, placing expediency above principle. Similar: opportunistic, self-seeker, expedient, timeserving, opportunivore, operator, careerist, exploiter, adventurer, exploitee, more... Opposite: altruist, altruistic, selfless Types: social opportunist, career opportunist, more... Phrases: opportunist mycobacteria, Opportunist Republicans, you can call me opportunist, unscrupulous opportunist, more... Adjectives: political, mere, unscrupulous, cynical, great, more, unprincipled, ruthless, shrewd, clever, supreme Colors:     gold,     silver,     bronze,     emerald,     jade, more... ▸ Words similar to opportunist ▸ Usage examples for opportunist ▸ Idioms related to opportunist ▸ Wikipedia articles (New!) ▸ Popular adjectives describing opportunist ▸ Words that often appear near opportunist ▸ Rhymes of opportunist ▸ Invented words related to opportunist