There are 10 6-letter words that start with 'sec'.
| secant | seccos | secede | secern | second | 
| secpar | secret | sector | secund | secure | 
Note: These 10 6-letter words that start with 'sec' are found from the USA & Canada version of the tournament Scrabble word list.
Also see words start with secu, secr, sect, seco, sece, secl, seca, secc, secp, secs.
4-letter words start with 'sec' (2)