There are 13 11-letter words that start with 'of'.
| offenseless | offensively | offertories |
| offhandedly | officialdom | officialese |
| officialism | officiaries | officiating |
| officiation | officiously | offprinting |
| offscouring | ||
Note: These 13 11-letter words that start with 'of' are found from the USA & Canada version of the tournament Scrabble word list.
Also see words start with off, oft, ofa.
3-letter words start with 'of' (2)