There are 4 15-letter words that end with 'de'.
| counterblockade | internucleotide |
| oligonucleotide | oligosaccharide |
Note: These 4 15-letter words that end with 'de' are found from the USA & Canada version of the tournament Scrabble word list.
Also see words end with ide, ade, ude, ode, ede, nde, yde, rde, lde, gde.
3-letter words end with 'de' (1)