cynÂ·ic /ˈsɪnɪk/ Pronunciation Key - Show Spelled Pronunciation[sin-ik] Pronunciation Key - Show IPA Pronunciation â€“noun 1. a person who believes that only selfishness motivates human actions and who disbelieves in or minimizes selfless acts or disinterested points of view. 2. (initial capital letter) one of a sect of Greek philosophers, 4th century b.c., who advocated the doctrines that virtue is the only good, that the essence of virtue is self-control, and that surrender to any external influence is beneath human dignity. 3. a person who shows or expresses a bitterly or sneeringly cynical attitude. â€“adjective 4. cynical. 5. (initial capital letter) Also, Cynical. of or pertaining to the Cynics or their doctrines. 6. Medicine/Medical Now Rare. resembling the actions of a snarling dog.