There are 11 words that start with 'sheath'.
| sheath | sheathe | sheaths |
| sheathed | sheather | sheathes |
| sheathers | sheathing | sheathbill |
| sheathings | sheathbills | |
Note: These 11 words that start with 'sheath' are found from the USA & Canada version of the tournament Scrabble word list.