There are 20 9-letter words that start with 'tac'.
| tacamahac | tachinids | tachismes |
| tachistes | tachylite | tachylyte |
| tachyonic | tacitness | tackboard |
| tackified | tackifier | tackifies |
| tackiness | tacklings | taconites |
| tactfully | tactician | tactilely |
| tactility | tactually | |
Note: These 20 9-letter words that start with 'tac' are found from the USA & Canada version of the tournament Scrabble word list.
Also see words start with tack, tach, tact, taci, taco, tace, taca, tacn, tacr.
4-letter words start with 'tac' (5)