There are 14 words that end with 'onizer'.
| ionizer | lionizer |
| ozonizer | canonizer |
| colonizer | deionizer |
| unionizer | harmonizer |
| sermonizer | missionizer |
| decarbonizer | skeletonizer |
| synchronizer | revolutionizer |
Note: These 14 words that end with 'onizer' are found from the USA & Canada version of the tournament Scrabble word list.