Definitions
1.NounA person who likes or tends to express a contradicting viewpoint, especially from one held by a majority of people, usually because of nonconformity or spite. .mw-parser-output .defdate{font-size:smaller}
2.NounA financial investor who tends to have an opinion of market trends at variance with most others.
3.AdjectiveLiking or tending to express a contradicting viewpoint, especially from one held by a majority of people.
4.AdjectiveHaving an opinion of market trends at variance with most others.