There are 17 words that start with 'unkn'.
| unknit | unknot |
| unknits | unknots |
| unknown | unknowns |
| unknitted | unknotted |
| unknowing | unknitting |
| unknotting | unknowable |
| unknowings | unknowingly |
| unknowability | unknowabilities |
| unknowledgeable | |
Note: These 17 words that start with 'unkn' are found from the USA & Canada version of the tournament Scrabble word list.