There are 15 words that start with 'wais'.
| waist | waists | waisted |
| waister | waisters | waisting |
| waistband | waistcoat | waistings |
| waistless | waistline | waistbands |
| waistcoats | waistlines | waistcoated |
Note: These 15 words that start with 'wais' are found from the USA & Canada version of the tournament Scrabble word list.