There are 12 words that end with 'ydes'.
| emydes | alcaydes |
| aldehydes | chlamydes |
| naugahydes | paraldehydes |
| benzaldehydes | acetaldehydes |
| formaldehydes | butyraldehydes |
| glutaraldehydes | glyceraldehydes |
Note: These 12 words that end with 'ydes' are found from the USA & Canada version of the tournament Scrabble word list.