We found 23 dictionaries that define the word word of mouth:

General (18 matching dictionaries)

1. word of mouth: Longman Dictionary of Contemporary English
2. word-of-mouth, word of mouth: Merriam-Webster
3. word of mouth: Oxford Learner's Dictionaries
4. word of mouth: American Heritage Dictionary of the English Language
5. word-of-mouth, word-of-mouth, word of mouth: Collins English Dictionary
6. word-of-mouth, word of mouth: Vocabulary.com
7. word-of-mouth, word of mouth: Wiktionary
8. word of mouth: Infoplease Dictionary
9. word-of-mouth, word of mouth: Dictionary.com
10. Word of Mouth (Jaco Pastorius album), Word of Mouth (Matt Finish album), Word of Mouth (The Blueskins album), Word of Mouth (The Kinks album), Word of Mouth (The Wanted album), Word of Mouth (Toni Basil album), Word of Mouth (Vicious Rumors album), Word of Mouth (film), Word of Mouth (journal), Word of Mouth (radio programme), Word of Mouth (website), Word-of-mouth, Word of mouth (disambiguation), Word of mouth: Wikipedia, the Free Encyclopedia
11. word-of-mouth, word of mouth: Rhymezone
12. word-of-mouth, word of mouth: FreeDictionary.org
13. word-of-mouth: Mnemonic Dictionary
14. Word Of Mouth: A to Z list of the most popular idioms
15. word-of-mouth, word of mouth: TheFreeDictionary.com
16. word of mouth: Mnemonic Dictionary

Art (1 matching dictionary)

17. Movie Terminology Glossary (No longer online)

Business (1 matching dictionary)

18. word-of-mouth: Legal dictionary

Computing (1 matching dictionary)

19. word-of-mouth, word of mouth: Encyclopedia

Miscellaneous (2 matching dictionaries)

20. AbbreviationZ (No longer online)
21. word-of-mouth: Idioms

(Note: See word_of_mouths as well.)

Definitions from Wiktionary (word of mouth) ▸ noun:  (idiomatic) Verbal means of passing on information; viva voce. Similar: pipeline, grapevine, verbalism, voice, mythos, word of God, language, epidemic, life-telling, mouthfeel, more... Opposite: publicity, advertising Phrases: by word of mouth, word of mouth marketing, having a word at the tip of the mouth, expressed by word of mouth, more... Adjectives: telling, performative, reminiscent, narrative, here, converse, orate, interlocutory, back and forth, symposiac, bewritten ▸ Words similar to word of mouth ▸ Usage examples for word of mouth ▸ Idioms related to word of mouth ▸ Wikipedia articles (New!) ▸ Words that often appear near word of mouth ▸ Rhymes of word of mouth ▸ Invented words related to word of mouth