There are 9 13-letter words that start with 'colo'.
| colonialistic | colonializing |
| colonisations | colonizations |
| colorbreeding | colorfastness |
| colorimetries | colorizations |
| colorlessness | |
Note: These 9 13-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)