There are 9 words that start with 'overas'.
| overassert | overasserts |
| overasserted | overasserting |
| overassertion | overassertive |
| overassertions | overassessment |
| overassessments | |
Note: These 9 words that start with 'overas' are found from the USA & Canada version of the tournament Scrabble word list.