There are 13 10-letter words that start with 'of'.
| offensives | officering | officially |
| officiants | officiated | officiates |
| officinals | offishness | offloading |
| offprinted | offsetting | offsprings |
| oftentimes | ||
Note: These 13 10-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)