There are 11 words that start with 'contam'.
| contaminant | contaminate |
| contaminants | contaminated |
| contaminates | contaminator |
| contaminating | contamination |
| contaminative | contaminators |
| contaminations | |
Note: These 11 words that start with 'contam' are found from the USA & Canada version of the tournament Scrabble word list.