There are 12 13-letter words that start with 'spo'.
| spokesmanship | spokespersons |
| spondylitises | spontaneities |
| spontaneously | sporopollenin |
| sportfishings | sportscasters |
| sportsmanlike | sportsmanship |
| sportswriters | sportswriting |
Note: These 12 13-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)