Synonyms: adversary, antagonist, opponent, opposer, resister
Definition: someone who offers opposition
Similar words: somebody, someone, soul, mortal, person, individual
Definition: a human being
Usage: there was too much for one person to do
Synonyms: obstructer, obstructionist, obstructor, resister, thwarter
Definition: someone who systematically obstructs some action that others want to take
Similar words: disputant, controversialist, eristic
Definition: a person who disputes; who is good at or enjoys controversy