There are 20 words that start with 'teac'.
| teach | teacup |
| teacake | teacart |
| teacher | teaches |
| teacups | teacakes |
| teacarts | teachers |
| teaching | teachable |
| teachably | teacherly |
| teachings | teacupful |
| teacupfuls | teacupsful |
| teachableness | teachablenesses |
Note: These 20 words that start with 'teac' are found from the USA & Canada version of the tournament Scrabble word list.