There are 13 words that start with 'rubi'.
| rubied | rubier |
| rubies | rubigo |
| rubidic | rubiest |
| rubigos | rubious |
| rubicund | rubidium |
| rubidiums | rubicundity |
| rubicundities | |
Note: These 13 words that start with 'rubi' are found from the USA & Canada version of the tournament Scrabble word list.