There are 15 words that end with 'ynes'.
| dynes | tynes | alkynes |
| groynes | ethynes | anodynes |
| autodynes | aerodynes | duvetynes |
| megadynes | langsynes | amplidynes |
| androgynes | heterodynes | trichogynes |
Note: These 15 words that end with 'ynes' are found from the USA & Canada version of the tournament Scrabble word list.