There are 15 words that start with 'nost'.
| nostoc | nostocs |
| nostril | nostrum |
| nostrils | nostrums |
| nostalgia | nostalgic |
| nostology | nostalgias |
| nostalgics | nostalgist |
| nostalgists | nostologies |
| nostalgically | |
Note: These 15 words that start with 'nost' are found from the USA & Canada version of the tournament Scrabble word list.