There are 12 words that start with 'manni'.
| manning | mannish |
| mannite | mannikin |
| mannites | mannitic |
| mannitol | mannikins |
| mannishly | mannitols |
| mannishness | mannishnesses |
Note: These 12 words that start with 'manni' are found from the USA & Canada version of the tournament Scrabble word list.