We found 23 dictionaries that define the word willpower:

General (19 matching dictionaries)

1. willpower: Longman Dictionary of Contemporary English
2. willpower: Merriam-Webster
3. willpower: Oxford Learner's Dictionaries
4. willpower: American Heritage Dictionary of the English Language
5. willpower: Collins English Dictionary
6. willpower: Vocabulary.com
7. Willpower, willpower: Wordnik
8. willpower: Cambridge Advanced Learner's Dictionary
9. willpower: Wiktionary
10. willpower: Webster's New World College Dictionary, 4th Ed.
11. willpower: Dictionary.com
12. willpower: Cambridge Essential American English Dictionary
13. Willpower (Today Is the Day album), Willpower (will.i.am album), Willpower: Wikipedia, the Free Encyclopedia
14. willpower: Rhymezone
15. willpower: FreeDictionary.org
16. willpower: Mnemonic Dictionary
17. willpower: TheFreeDictionary.com

Business (2 matching dictionaries)

18. willpower: Legal dictionary
19. willpower: Financial dictionary

Computing (1 matching dictionary)

20. willpower: Encyclopedia

Medicine (1 matching dictionary)

21. willpower: Medical dictionary

(Note: See willpowers as well.)

Definitions from Wiktionary ( ) ▸ noun:  The unwavering strength of will to carry out one's wishes. Similar: self-control, self-will, self-command, strength of will, self-discipline, inner strength, courage, willedness, self-willedness, character, more... Opposite: weakness, frailty, lack of resolve Types: volition, inhibition, self-control, self-regulation, self-discipline, self-restraint, self-denial, more... Phrases: Lady Willpower, having willpower, lacking in willpower, having much willpower, opposite of willpower, more... Adjectives: sheer, stronger, own, more, enough, greater, human, lesser, tremendous, individual, political Colors:     red,     crimson,     scarlet,     burgundy,     maroon, more... ▸ Words similar to willpower ▸ Usage examples for willpower ▸ Idioms related to willpower ▸ Wikipedia articles (New!) ▸ Popular adjectives describing willpower ▸ Words that often appear near willpower ▸ Rhymes of willpower ▸ Invented words related to willpower