There are 11 words that start with 'tachis'.
| tachism | tachist |
| tachisme | tachisms |
| tachiste | tachists |
| tachismes | tachistes |
| tachistoscope | tachistoscopes |
| tachistoscopic | |
Note: These 11 words that start with 'tachis' are found from the USA & Canada version of the tournament Scrabble word list.