CYNIC

• Ambrose Bierce, for one

• Ambrose Bierce, notably

• Antisthenes, notably

• Believer in disbelief

• Bierce, notably

• Critic of the selfless

• Diogenes, for one

• Diogenes, notably

• Disbeliever in selfless acts

• Distrusting sort

• Doubiting Thomas

• Doubter

• Hard one to convince

• Jaded figure

• Jaded sort

• Jaded type

• Misanthrope

• Motive questioner

• Negative sort

• Negative sort of person

• Nonbeliever

• One of a group of Ancient Greek philosophers

• One who assumes the worst

• One whose faulty vision sees things as they are, not as they ought to be: Bierce

• One with a critical attitude

• One with a jaundiced view

• One with a negative outlook on life

• Pessimist

• Pessimist, often

• Pessimistic person

• Pessimistic sort

• Pessimistic type

• Sarcastic sort

• She's world-weary

• Sincerity doubter

• Skeptic

• Skeptical one

• Skeptical person

• Skeptical sort

• Someone who is a tough sell

• Sour sort

• Suspicious sourpuss

• Suspiciously skeptical sort

• Someone who is critical of the motives of others