There are 9 words that start with 'clair'.
| clairvoyant | clairaudient | 
| clairvoyance | clairvoyants | 
| clairaudience | clairvoyances | 
| clairvoyantly | clairaudiences | 
| clairaudiently | |
Note: These 9 words that start with 'clair' are found from the USA & Canada version of the tournament Scrabble word list.