There are 30 10-letter words that start with 'ter'.
Note: These 30 10-letter words that start with 'ter' are found from the USA & Canada version of the tournament Scrabble word list.
Also see words start with terr, term, tera, terg, terp, terc, tere, tern, ters, tert, terb, teri, tery, terv.
4-letter words start with 'ter' (2)