There are 13 12-letter words that start with 'nat'.
| nationalised | nationalises | nationalisms |
| nationalists | nationalized | nationalizer |
| nationalizes | nativenesses | natriuretics |
| naturalising | naturalistic | naturalizing |
| naturopathic | ||
Note: These 13 12-letter words that start with 'nat' are found from the USA & Canada version of the tournament Scrabble word list.
Also see words start with nati, natu, nata, natr, natt, nath, natc, nate.
5-letter words start with 'nat' (4)