There are 11 words that end with 'ylls'.
| idylls | ghylls |
| argylls | cataphylls |
| mesophylls | cladophylls |
| microphylls | sporophylls |
| chlorophylls | xanthophylls |
| megasporophylls | |
Note: These 11 words that end with 'ylls' are found from the USA & Canada version of the tournament Scrabble word list.