bad apple
noun Informal.
a discontented, troublemaking, or dishonest person: In any group of average citizens there are bound to be a few bad apples.
Origin of bad apple
from the proverb “one bad apple spoils the barrel”
Words nearby bad apple
baculite,
baculum,
bacău,
bad,
bad actor,
bad apple,
bad bank,
bad blood,
bad breath,
bad cholesterol,
bad conduct discharge