duplicity

/du̇-ˈpli-sə-tē/

Middle English duplicite, from Middle French, from Late Latin duplicitat-, duplicitas, from Latin duplex

noun

  1. contradictory doubleness of thought, speech, or action; especially : the belying of one's true intentions by deceptive words or action

  2. the quality or state of being double or twofold

  3. the technically incorrect use of two or more distinct items (such as claims, charges, or defenses) in a single legal action

the simplicity and openness of their lives brought out for him the duplicity that lay at the bottom of ours