There are 7 13-letter words that start with 'impo'.
| impolitically | imponderables |
| importunately | importunities |
| impossibility | impoverishers |
| impoverishing | |
Note: These 7 13-letter words that start with 'impo' are found from the USA & Canada version of the tournament Scrabble word list.
Also see words start with impos, impor, impol, impon, impou, impov, impot, impow.
6-letter words start with 'impo' (4)