There are 5 12-letter words that start with 'ski'.
| skillessness | skillfulness | skimpinesses |
| skinninesses | skittishness | |
Note: These 5 12-letter words that start with 'ski' are found from the USA & Canada version of the tournament Scrabble word list.
Also see words start with skin, skim, skir, skid, skit, skil, skip, skiv, skia, skif, skib, skie, skij, skii, skio, skis, skiw.
4-letter words start with 'ski' (6)