There are 12 13-letter words that start with 'gy'.
| gymnastically | gymnosophists |
| gymnospermies | gymnospermous |
| gynaecologies | gynandromorph |
| gynecocracies | gynecological |
| gynecologists | gynecomastias |
| gyrocompasses | gyrofrequency |
Note: These 12 13-letter words that start with 'gy' are found from the USA & Canada version of the tournament Scrabble word list.
Also see words start with gyr, gyn, gyp, gym, gyb, gyv, gyo, gyt.
3-letter words start with 'gy' (2)