We found 17 dictionaries that define the word nicer:

General (11 matching dictionaries)

1. nicer: Merriam-Webster
2. nicer: Collins English Dictionary
3. nicer: Vocabulary.com
4. Nicer, nicer: Wordnik
5. nicer: Cambridge Advanced Learner's Dictionary
6. NICER, nicer: Wiktionary
7. Nicer, nicer: Dictionary.com
8. nicer: Cambridge Essential American English Dictionary
9. NICER: Wikipedia, the Free Encyclopedia
10. nicer: FreeDictionary.org
11. nicer: TheFreeDictionary.com

Business (1 matching dictionary)

12. nicer: Legal dictionary

Computing (1 matching dictionary)

13. nicer: Encyclopedia

Medicine (1 matching dictionary)

14. nicer: Medical dictionary

Miscellaneous (2 matching dictionaries)

15. NICER: Acronym Finder
16. nicer: Idioms

Slang (1 matching dictionary)

17. Nicer: Urban Dictionary

(Note: See nice as well.)

Definitions from Wiktionary (NICER) ▸ noun:  Initialism of Neutron Star Interior Composition Explorer, a future NASA Explorers program Mission of Opportunity. Similar: pretty, better, friendly, lovely, fancier, cheap, easier, happy, neat, cuteness, more... Phrases: It Couldn't Happen to a Nicer Guy, when someone is being nicer, nicer alternative word, nicer on the inside, more... Adjectives: little, more, gastric, peptic, rodent, duodenal, chronic, simple, litde, syphilitic, cancerous Colors:     sky blue,     pastel pink,     lavender,     mint green,     peach, more... ▸ Words similar to nicer ▸ Usage examples for nicer ▸ Idioms related to nicer ▸ Wikipedia articles (New!) ▸ Popular adjectives describing nicer ▸ Words that often appear near nicer ▸ Rhymes of nicer ▸ Invented words related to nicer