We found 12 dictionaries that define the word could'st:

General (12 matching dictionaries)

1. couldst: Merriam-Webster
2. couldst: Oxford Learner's Dictionaries
3. couldst: Collins English Dictionary
4. Could'st, Couldst, could'st, couldst: Wordnik
5. could'st, couldst: Wiktionary
6. couldst: Webster's New World College Dictionary, 4th Ed.
7. couldst: Infoplease Dictionary
8. couldst: Dictionary.com
9. couldst: TheFreeDictionary.com
10. couldst: Longman Dictionary of Contemporary English

Definitions from Wiktionary (Could'st) ▸ verb:  Obsolete form of couldst. ▸ Words similar to could'st ▸ Usage examples for could'st ▸ Idioms related to could'st ▸ Wikipedia articles (New!) ▸ Words that often appear near could'st ▸ Rhymes of could'st ▸ Invented words related to could'st