There are 23 8-letter words that start with 'son'.
Note: These 23 8-letter words that start with 'son' are found from the USA & Canada version of the tournament Scrabble word list.
Also see words start with song, sonn, sono, sona, soni, sons, sond, sonl, sone, sonh.
4-letter words start with 'son' (3)