There are 25 8-letter words that start with 'super'.
Note: These 25 8-letter words that start with 'super' are found from the USA & Canada version of the tournament Scrabble word list.
Also see words start with supers, superc, supera, superp, superi, superh, superf, supere, superm, supern, superl, superb, superv, superg, supero, supert, superr, superw, superj, superd, superq.
6-letter words start with 'super' (2)