Cynical
Cynical /ˈsɪn.ɪ.kəl/ (adj)
pessimistic about people’s intentions, skeptical, negative, distrustful, sarcastic and mocking, contemptuous, scornful:
They were cynical about the team`s chance of winning the championship.
Noun: cynic: pessimist, skeptic, doubter, misanthropist
Noun: cynicism, cynicalness
Adverb: cynically