There are 11 11-letter words that start with 'up'.
| upbringings | upcountries | upgathering |
| upgradeable | upholstered | upholsterer |
| uppercasing | uprightness | upspringing |
| upthrusting | uptightness | |
Note: These 11 11-letter words that start with 'up' are found from the USA & Canada version of the tournament Scrabble word list.
Also see words start with ups, upr, upt, upb, uph, upp, upg, upc, upl, upd, upw, upf, upe, upm, upa, upk, upo.
3-letter words start with 'up' (2)