We found 26 dictionaries that define the word softener:

General (22 matching dictionaries)

1. softener: Longman Dictionary of Contemporary English
2. softener: Merriam-Webster
3. softener: Oxford Learner's Dictionaries
4. softener: Collins English Dictionary
5. softener: Vocabulary.com
6. Softener, softener: Wordnik
7. softener: Cambridge Advanced Learner's Dictionary
8. softener: Wiktionary
9. softener: Webster's New World College Dictionary, 4th Ed.
10. softener: The Wordsmyth English Dictionary-Thesaurus
11. softener: Infoplease Dictionary
12. softener: Dictionary.com
13. Softener: Wikipedia, the Free Encyclopedia
14. Softener: Online Plain Text English Dictionary
15. softener: Webster's Revised Unabridged, 1913 Edition
16. softener: Rhymezone
17. Softener: AllWords.com Multi-Lingual Dictionary
18. softener: FreeDictionary.org
19. softener: Mnemonic Dictionary
20. softener: TheFreeDictionary.com

Business (1 matching dictionary)

21. softener: Legal dictionary

Miscellaneous (1 matching dictionary)

22. softener: Idioms

Slang (1 matching dictionary)

23. softener: Urban Dictionary

Tech (1 matching dictionary)

24. Book Binding (No longer online)

(Note: See soften as well.)

Definitions from Wiktionary ( ) ▸ noun:  One who, or that which, softens. ▸ noun:  A water softener. ▸ noun:  Fabric softener. ▸ noun:  (chemistry) A substance added to make something softer. Similar: softner, soother, smoother, clarifier, quietener, brightener, waterer, hardener, defuser, nourisher, more... Phrases: water softener, fabric softener, stool softener, fecal softener, skin softener, more... Adjectives: laxative, liquid, hot, great, fabric, fecal, faecal, mild, effective, good, hair ▸ Words similar to softener ▸ Usage examples for softener ▸ Idioms related to softener ▸ Wikipedia articles (New!) ▸ Popular adjectives describing softener ▸ Words that often appear near softener ▸ Rhymes of softener ▸ Invented words related to softener