There are 11 words that start with 'tarn'.
| tarn | tarns | tarnal |
| tarnish | tarnally | tarnation |
| tarnished | tarnishes | tarnations |
| tarnishing | tarnishable | |
Note: These 11 words that start with 'tarn' are found from the USA & Canada version of the tournament Scrabble word list.