cynic, noun: “a faultfinding captious critic, especially one who believes that human conduct is motivated wholly by self-interest” (Merriam-Webster).
Synonyms: misanthrope • naysayer • pessimist • skeptic Antonyms: optimist • idealist
Other synonyms include: Ironic, sarcastic, negative, sardonic, suspicious, negativistic, derisive, fatalistic, distrustful, mocking, mistrustful, scornful, defeatist, jaded, worldly-wise, unsentimental, sophisticated, hard-bitten, etc.…

