Slaphappy First-Syllable Rhymes 10 Rhymes Found Add Slaphappy to Favorites Definition Thesaurus One-Syllable Rhymes 1 slap Two-Syllable Rhymes 6 slapdash slapjack slapper slappers slapstick slapsticks Three-Syllable Rhymes 1 slaphappy Four-Syllable Rhymes 2 slaphappier slaphappiest