negativist

Từ điển WordNet v3.1 - WordNet Dictionary

noun

1. someone who refuses to do what is asked or does the opposite of what is asked
• Hypernyms:
balker, baulker, noncompliant
2. someone who is resigned to defeat without offering positive suggestions
• Syn:
defeatist
• Derivationally related forms:
negativism, defeat (for: defeatist), defeatism (for: defeatist)
• Hypernyms:
pessimist