There are 8 13-letter words that start with 'wate'.
| watercolorist | waterflooding |
| waterfowlings | waterlessness |
| watermanships | waterproofers |
| waterproofing | waterthrushes |
Note: These 8 13-letter words that start with 'wate' are found from the USA & Canada version of the tournament Scrabble word list.