We found 15 dictionaries that define the word louder:

General (12 matching dictionaries)

1. louder: Merriam-Webster
2. louder: Collins English Dictionary
3. louder: Vocabulary.com
4. Louder, louder: Wordnik
5. louder: Cambridge Advanced Learner's Dictionary
6. Louder, louder: Wiktionary
7. Louder, louder: Dictionary.com
8. louder: Cambridge Essential American English Dictionary
9. Louder (Charice song), Louder (DJ Fresh song), Louder (Lea Michele album), Louder (Lea Michele song), Louder (Neon Jungle song), Louder (Put Your Hands Up), Louder (R5 album), Louder (song), Louder, Louder: Wikipedia, the Free Encyclopedia
10. Louder: Rhymezone
11. louder: FreeDictionary.org
12. louder: TheFreeDictionary.com

Business (1 matching dictionary)

13. louder: Legal dictionary

Computing (1 matching dictionary)

14. louder: Encyclopedia

Miscellaneous (1 matching dictionary)

15. louder: Idioms

(Note: See loud as well.)

Definitions from Wiktionary (Louder) ▸ noun:  A surname. Similar: Louderback, louden, Harder, Loudermilk, Loudon, bigger, Loudin, Darker, older, Lyden, more... Opposite: quieter, softer, subdued Types: megaphone, stereo, amplifier, more... Phrases: actions speak louder than words, Louder Than Love, Alexis Louder, Louder Than Bombs, Only Much Louder, more... Colors:     neon green,     electric blue,     hot pink,     vivid orange,     lime green, more... ▸ Words similar to louder ▸ Usage examples for louder ▸ Idioms related to louder ▸ Wikipedia articles (New!) ▸ Popular adjectives describing louder ▸ Words that often appear near louder ▸ Rhymes of louder ▸ Invented words related to louder