optimist Antonyms

pessimist bear skeptic worrier detractor bear off killjoy faultfinder naysayer naysaying defeatist contrarian emo doubting Thomas moaning Minnie refusenik cannot-doer negative thinker refuter realist critic cynic denier depreciator dissenter doubter fault-finder handicapper heretic malcontent misanthrope objector obstructionist pessimism quibbler quitter pessimizing