We found 7 dictionaries that define the word grapiest:

General (5 matching dictionaries)

1. grapiest: Merriam-Webster
2. grapiest: Collins English Dictionary
3. grapiest: Wiktionary
4. grapiest: Dictionary.com
5. grapiest: TheFreeDictionary.com

Computing (1 matching dictionary)

6. grapiest: Encyclopedia

Miscellaneous (1 matching dictionary)

7. grapiest: Idioms

(Note: See grapy as well.)

Definitions from Wiktionary (Grapy) ▸ adjective:  Alternative form of grapey [Resembling grapes.] ▸ Also see grapy ▸ Words similar to grapiest ▸ Usage examples for grapiest ▸ Idioms related to grapiest ▸ Wikipedia articles (New!) ▸ Popular nouns described by grapiest ▸ Words that often appear near grapiest ▸ Rhymes of grapiest ▸ Invented words related to grapiest