1. A method or procedure whose validity, ethics, or effectiveness is uncertain or open to question
The coach was criticized for using a questionable technique to train the athletes.
O técnico foi criticado por usar uma técnica duvidosa para treinar os atletas.
2. A tactic or approach that may be considered unfair, unethical, or of uncertain merit
The politician's questionable technique of spreading misinformation backfired.
A técnica duvidosa do político de disseminar desinformação saiu pela culatra.