There are 19 words that start with 'cirr'.
| cirri | cirrus | cirrate | 
| cirrose | cirrous | cirriped | 
| cirrhosed | cirrhoses | cirrhosis | 
| cirrhotic | cirriform | cirripede | 
| cirripeds | cirrhotics | cirripedes | 
| cirrocumuli | cirrostrati | cirrocumulus | 
| cirrostratus | ||
Note: These 19 words that start with 'cirr' are found from the USA & Canada version of the tournament Scrabble word list.