There are 207 12-letter words that start with 'over'.
Note: These 207 12-letter words that start with 'over' are found from the USA & Canada version of the tournament Scrabble word list.
Also see words start with overs, overc, overp, overe, overd, overt, overb, overa, overl, overw, overf, overh, overr, overm, overg, overi, overo, overn, overv, overu, overk, overj, overz, overq.
5-letter words start with 'over' (2)