There are 16 11-letter words that start with 'colo'.
| cologarithm | colonelcies | colonialism |
| colonialist | colonialize | colonitises |
| colophonies | colorations | coloraturas |
| colorbreeds | colorcasted | colorimeter |
| colorimetry | colorlessly | colorpoints |
| colostomies | ||
Note: These 16 11-letter words that start with 'colo' are found from the USA & Canada version of the tournament Scrabble word list.
Also see words start with color, colon, colos, colog, coloc, colou, colob, colop, colom, colot.
5-letter words start with 'colo' (3)