There are 17 words that end with 'ius'.
| medius | genius |
| radius | regius |
| congius | sardius |
| bacchius | denarius |
| nauplius | senarius |
| splenius | sartorius |
| sextarius | retiarius |
| trapezius | septenarius |
| gastrocnemius | |
Note: These 17 words that end with 'ius' are found from the USA & Canada version of the tournament Scrabble word list.