There are 12 14-letter words that start with 'na'.
| namelessnesses | nannoplanktons |
| nanotechnology | naphthylamines |
| narratological | narratologists |
| narrowcastings | nasopharyngeal |
| naturalization | nauseousnesses |
| navigabilities | navigationally |
Note: These 12 14-letter words that start with 'na' are found from the USA & Canada version of the tournament Scrabble word list.
Also see words start with nat, nar, nap, nan, nas, nau, nai, nav, nam, nab, nag, nac, nal, nay, nak, naz, nae, nad, naf, naw, naa, nao, nah.
3-letter words start with 'na' (9)