There are 18 9-letter words that start with 'tet'.
| tetanical | tetanised | tetanises |
| tetanized | tetanizes | tetanuses |
| tetchiest | tethering | tetracids |
| tetragons | tetragram | tetralogy |
| tetramers | tetrapods | tetrarchs |
| tetrarchy | tetroxide | tetroxids |
Note: These 18 9-letter words that start with 'tet' are found from the USA & Canada version of the tournament Scrabble word list.
Also see words start with tetr, teta, teth, tetc, teto, tett, tets.
4-letter words start with 'tet' (2)