Spelling list: Words ending in ssor and rror

After the letters ss and rr many words use or to spell the weak vowel ending.

aggressor	He was the aggressor in the argument.
assessor	How long will it take to get an assessor for this job?
confessor	The confessor changed his story.
oppressor	The ruler was known to be an oppressor.
possessor	She was the possessor of a large fortune.
predecessor	He was concerned that he would be overshadowed by his predecessor.
processor	I made this soup in a food processor.
professor	The professor gave a lecture on ancient history.
successor	My successor will work just as hard.
horror	The horror film made me squirm.
mirror	We have a large mirror in our hall.
error	He couldn't believe the spelling error he had made.
terror	Her terror was evident in her voice.