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We found 30 dictionaries with English definitions that include the word harmless:
Click on the first link on a line below to go directly to a page where "harmless" is defined.

General (27 matching dictionaries)

1. harmless: Merriam-Webster.com [home, info]
2. harmless: Oxford Dictionaries [home, info]
3. harmless: American Heritage Dictionary of the English Language [home, info]
4. harmless: Collins English Dictionary [home, info]
5. harmless: Vocabulary.com [home, info]
6. harmless: Macmillan Dictionary [home, info]
7. Harmless, harmless: Wordnik [home, info]
8. harmless: Cambridge Advanced Learner's Dictionary [home, info]
9. harmless: Wiktionary [home, info]
10. harmless: Webster's New World College Dictionary, 4th Ed. [home, info]
11. harmless: The Wordsmyth English Dictionary-Thesaurus [home, info]
12. harmless: Infoplease Dictionary [home, info]
13. harmless: Dictionary.com [home, info]
14. harmless: UltraLingua English Dictionary [home, info]
15. harmless: Cambridge Dictionary of American English [home, info]
16. Harmless: Online Plain Text English Dictionary [home, info]
17. harmless: Webster's Revised Unabridged, 1913 Edition [home, info]
18. harmless: Rhymezone [home, info]
19. harmless: AllWords.com Multi-Lingual Dictionary [home, info]
20. harmless: Webster's 1828 Dictionary [home, info]
21. harmless: Free Dictionary [home, info]
22. harmless: Mnemonic Dictionary [home, info]
23. harmless: WordNet 1.7 Vocabulary Helper [home, info]
24. harmless: LookWAYup Translating Dictionary/Thesaurus [home, info]
25. harmless: Dictionary/thesaurus [home, info]

Business (2 matching dictionaries)

26. harmless: Glossary of Legal Terms [home, info]
27. harmless: Legal dictionary [home, info]

Slang (1 matching dictionary)

28. Harmless: A Seattle Lexicon [home, info]

(Note: See harmlessness for more definitions.)

Quick definitions from Macmillan ( ) Provided by Quick definitions from WordNet (harmless) ▸ adjective:  unlikely to harm or disturb anyone ("Harmless old man") ▸ adjective:  not producing any toxic effects ▸ adjective:  not threatening to life or health; not malignant ("A benign tumor is usually harmless") ▸ adjective:  not causing or capable of causing harm ("Harmless bacteria") ▸ adjective:  not injurious to physical or mental health ▸ Also see harmlessness ▸ Words similar to harmless ▸ Usage examples for harmless ▸ Popular nouns described by harmless ▸ Words that often appear near harmless ▸ Rhymes of harmless ▸ Invented words related to harmless