There are 16 words that start with 'oppr'.
| oppress | oppressed | 
| oppresses | oppressor | 
| oppressing | oppression | 
| oppressive | oppressors | 
| opprobrium | oppressions | 
| opprobrious | opprobriums | 
| oppressively | opprobriously | 
| oppressiveness | opprobriousness | 
Note: These 16 words that start with 'oppr' are found from the USA & Canada version of the tournament Scrabble word list.