There are 6 15-letter words that start with 'coll'.
| collaboratively | collateralities |
| collateralizing | collectednesses |
| collenchymatous | colloquialities |
Note: These 6 15-letter words that start with 'coll' are found from the USA & Canada version of the tournament Scrabble word list.
Also see words start with colle, colla, colli, collo, collu, colly.
5-letter words start with 'coll' (1)