English-Portuguese translations for bad apple

• maçã podre
  Não devemos condenar todo o sistema só porque existe uma maçã podre. We should not condemn the whole system just because of one bad apple.

Definition of bad apple

• A person who is not wholesome, honest, or trustworthy, especially one who has an adverse influence on others

Related words

• a bad compromise is better than a good lawsuit
• a bad workman always blames his tools
• a bad penny always turns up
• a bad carpenter blames his tools
• give a dog a bad name, and hang him
• fire is a good servant but a bad master
• give a bad name
• drop like a bad habit
• make the best of a bad job
• three removals are as bad as a fire