There are 18 words that start with 'cadd'.
| caddy | caddie |
| caddis | caddice |
| caddied | caddies |
| caddish | caddices |
| caddised | caddises |
| caddying | caddisfly |
| caddishly | caddisworm |
| caddisflies | caddishness |
| caddisworms | caddishnesses |
Note: These 18 words that start with 'cadd' are found from the USA & Canada version of the tournament Scrabble word list.