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DUPLICITY, noun [Latin , double.]

1. Doubleness; the number two.

2. Doubleness of heart or speech; the act or practice of exhibiting a different or contrary conduct, or uttering different or contrary sentiments, at different times, in relation to the same thing; or the act of dissembling ones real opinions for the purpose of concealing them and misleading persons in the conversation and intercourse of life; double-dealing; dissimulation; deceit.

3. In law, duplicity is the pleading of two or more distinct matters or single pleas.