There are 13 words that start with 'heartb'.
| heartbeat | heartburn |
| heartbeats | heartbreak |
| heartburns | heartbreaks |
| heartbroken | heartbreaker |
| heartburning | heartbreakers |
| heartbreaking | heartburnings |
| heartbreakingly | |
Note: These 13 words that start with 'heartb' are found from the USA & Canada version of the tournament Scrabble word list.