There are 11 12-letter words that start with 'ru'.
| rubbernecked | rubbernecker | rubefacients |
| rubrications | ruefulnesses | ruggednesses |
| ruminatively | rumormongers | rustications |
| rustproofing | ruthlessness | |
Note: These 11 12-letter words that start with 'ru' are found from the USA & Canada version of the tournament Scrabble word list.
Also see words start with rub, rum, rus, run, rud, rug, rut, ruf, ruc, rur, rui, rul, rue, rup, rua.
3-letter words start with 'ru' (6)