To dissemble means to hide your true feelings, thoughts, or intentions by pretending to feel or believe something different. When someone dissembles, they actively put on an act to mislead others, creating a false impression through their words and behavior.

Imagine a student who breaks a school rule and then acts innocent and confused when questioned, even though they know exactly what they did. That's dissembling. Or picture someone who secretly dislikes a classmate but acts friendly and cheerful around them, hiding their real feelings behind a false smile.

Dissembling is more calculated than simply lying about one fact. A dissembler creates a whole false impression, carefully managing what they say and how they act. In Shakespeare's plays, characters often dissemble to hide dangerous plans or secret knowledge. A spy might dissemble to keep their true identity secret.

While sometimes people dissemble to protect themselves in truly dangerous situations, it generally suggests dishonesty and manipulation. When trust matters, as in friendships or working together on a team, dissembling damages relationships because it replaces honesty with deception.