There are 12 words that end with 'retion'.
| accretion | excretion |
| incretion | secretion |
| discretion | concretion |
| carburetion | indiscretion |
| oversecretion | hyperexcretion |
| hypersecretion | neurosecretion |
Note: These 12 words that end with 'retion' are found from the USA & Canada version of the tournament Scrabble word list.