term:

Duplicity

duplicity n

pl: -ties
[Late Latin duplicitat- duplicitas duality, double-dealing, from Latin duplex twofold]
1 : the use of deceptive words or actions
2 : the use of more than one claim, allegation, or defense in a single paragraph of a pleading
;esp
: the improper charging of more than one offense in one count in a charging instrument (as an indictment) compare misjoinder, multiplicity

Source: Merriam-Webster's Dictionary of Law ©1996. Merriam-Webster, Incorporated. Published under license with Merriam-Webster, Incorporated.