backseat driver noun
plural ∼ -ers [count] 1 : a passenger in a car who gives driving advice to the driver 2 : someone who gives unwanted advice or who tries to control something that is supposed to be controlled by another person
▪ Several members of the board of directors have accused him of being a backseat driver.
▪ Several members of the board of directors have accused him of being a backseat driver.
