Noncooperator is a term used to describe someone who does not cooperate or work together with others towards a common goal. There are several synonyms for the word noncooperator, including lone wolf, independent, individualist, isolationist, antagonist, and dissenter. A lone wolf is someone who prefers to work alone and does not seek or require the help of others. An independent person is someone who is self-reliant and does not feel the need to rely on others. An individualist is someone who places a high value on individual freedom and autonomy. An isolationist is someone who prefers to remain isolated from others. An antagonist is someone who opposes or fights against a particular person or group. A dissenter is someone who expresses disagreement or opposition to a particular idea or belief.