cynic
noun
cyn·ic
| \ ˈsi-nik
\
\
Definition of cynic
1
: a faultfinding captious critic
especially
: one who believes that human conduct is motivated wholly by self-interest
Of course, there will always be cynics when companies make good-faith apologies and seek to follow through. — Andrew Ross Sorkin
2
capitalized
: an adherent of an ancient Greek school of philosophers who held the view that virtue is the only good and that its essence lies in self-control and independence