There are 11 words that start with 'operc'.
| opercele | opercula | opercule |
| operceles | opercular | opercules |
| operculum | operculars | operculate |
| operculums | operculated | |
Note: These 11 words that start with 'operc' are found from the USA & Canada version of the tournament Scrabble word list.