We found 12 dictionaries that define the word cross my heart and hope to die:

General (6 matching dictionaries)

1. cross my heart and hope to die: Merriam-Webster
2. cross my heart and hope to die, cross my heart and hope to die: Collins English Dictionary
3. cross my heart and hope to die: Wiktionary
4. Cross My Heart and Hope to Die (film), Cross My Heart and Hope to Die: Wikipedia, the Free Encyclopedia
5. cross my heart and hope to die: TheFreeDictionary.com
6. cross my heart and hope to die: Longman Dictionary of Contemporary English

Business (2 matching dictionaries)

7. cross my heart and hope to die: Legal dictionary
8. cross my heart and hope to die: Financial dictionary

Computing (1 matching dictionary)

9. cross my heart and hope to die: Encyclopedia

Medicine (1 matching dictionary)

10. cross my heart and hope to die: Medical dictionary

Miscellaneous (1 matching dictionary)

11. cross my heart and hope to die: Idioms

Slang (1 matching dictionary)

12. cross my heart and hope to die: Urban Dictionary

Definitions from Wiktionary (cross my heart and hope to die) ▸ verb:  (idiomatic, intransitive) Added to a promise or a statement to show how serious one was about being honest in what one said Similar: cross one's heart, stick a needle in my eye, cross one's fingers, swear on a stack of Bibles, swear down, stake one's life, keep one's fingers crossed, bet one's life, ride or die, hope against hope, more... ▸ Words similar to cross my heart and hope to die ▸ Usage examples for cross my heart and hope to die ▸ Idioms related to cross my heart and hope to die ▸ Wikipedia articles (New!) ▸ Words that often appear near cross my heart and hope to die ▸ Rhymes of cross my heart and hope to die ▸ Invented words related to cross my heart and hope to die