There are 509 words that start with 'hi'.
Note: These 509 words that start with 'hi' are found from the USA & Canada version of the tournament Scrabble word list.
Also see words start with his, hig, hil, hip, hin, hir, hid, hie, hit, hic, hib, hij, hik, him, hiv, hia, hiz, hif.
3-letter words start with 'hi' (8)