There are 20 8-letter words that start with 'ef'.
| effacers | effacing | effected | effecter |
| effector | effendis | efferent | effetely |
| efficacy | effigial | effigies | effluent |
| effluvia | effluxes | effulged | effulges |
| effusing | effusion | effusive | eftsoons |
Note: These 20 8-letter words that start with 'ef' are found from the USA & Canada version of the tournament Scrabble word list.
Also see words start with eff, eft, efs.
3-letter words start with 'ef' (3)