There are 27 7-letter words that start with 'tru'.
Note: These 27 7-letter words that start with 'tru' are found from the USA & Canada version of the tournament Scrabble word list.
Also see words start with trus, truc, trun, true, trum, trud, trua, trut, truf, trui, trul, trug.
4-letter words start with 'tru' (2)