There are 20 words that start with 'cai'.
| caid | cain | caids |
| cains | caird | cairn |
| caiman | caique | cairds |
| cairns | cairny | caimans |
| caiques | cairned | caisson |
| caitiff | caissons | caitiffs |
| cairngorm | cairngorms | |
Note: These 20 words that start with 'cai' are found from the USA & Canada version of the tournament Scrabble word list.