There are 11 13-letter words that start with 'tet'.
| tetanizations | tetartohedral |
| tetrachloride | tetracyclines |
| tetradynamous | tetrafluoride |
| tetrahedrally | tetrahedrites |
| tetraploidies | tetrapyrroles |
| tetrodotoxins | |
Note: These 11 13-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)