There are 12 14-letter words that start with 'spo'.
| spokesmanships | sporangiophore |
| sporopollenins | sporotrichoses |
| sporotrichosis | sportfisherman |
| sportfishermen | sportfulnesses |
| sportivenesses | sportsmanships |
| sportswritings | spotlessnesses |
Note: These 12 14-letter words that start with 'spo' are found from the USA & Canada version of the tournament Scrabble word list.
Also see words start with spor, spoo, spon, spot, spok, spou, spoi, spol, spod.
4-letter words start with 'spo' (1)