There are 30 12-letter words that start with 'overs'.
Note: These 30 12-letter words that start with 'overs' are found from the USA & Canada version of the tournament Scrabble word list.
Also see words start with overst, overse, oversp, oversa, oversu, oversh, oversi, oversl, oversw, overso, oversc, oversm, oversk.
7-letter words start with 'overs' (7)