There are 8 10-letter words that end with 'onist'.
| balloonist | bassoonist | antagonist |
| cartoonist | fictionist | reunionist |
| symphonist | trombonist | |
Note: These 8 10-letter words that end with 'onist' are found from the USA & Canada version of the tournament Scrabble word list.
Also see words end with ionist, gonist, honist, monist, oonist, bonist, conist, donist, lonist, nonist, ronist, sonist, tonist, yonist.
6-letter words end with 'onist' (1)