There are 13 words that start with 'tachi'.
| tachism | tachist |
| tachinid | tachisme |
| tachisms | tachiste |
| tachists | tachinids |
| tachismes | tachistes |
| tachistoscope | tachistoscopes |
| tachistoscopic | |
Note: These 13 words that start with 'tachi' are found from the USA & Canada version of the tournament Scrabble word list.