There are 10 words that end with 'ptide'.
| riptide | peptide |
| dipeptide | mucopeptide |
| octapeptide | polypeptide |
| glycopeptide | neuropeptide |
| pentapeptide | fibrinopeptide |
Note: These 10 words that end with 'ptide' are found from the USA & Canada version of the tournament Scrabble word list.