Dissimulation
Charles Buck Theological Dictionary [1]
The act of dissembling. It has been distinguished from simulation thus: Simulation is making a thing appear which does not exist; dissimulation is keeping that which exists from appearing. Moralists have observed that all dissimulation is not hypocrisy. A vicious man, who endeavours to throw a veil over his bad conduct, that he may escape the notice of men, is not in the strictest sense of the word a hypocrite, since a man is no more obliged to proclaim his secret vices than any other of his secrets. The hypocrite is one who dissembles for a bad end, and hides the snare that he may be more sure of his prey; and, not content with a negative virtue, or not show of positive virtue, and appears the man he is not.
See Hypocrist.
King James Dictionary [2]
Dissimulation, n. L., to make like like. The act of dissembling a hiding under a false appearance a feigning false pretension hypocrisy. Dissimulation may be simply concealment of the opinions, sentiments or purpose but it includes also the assuming of a false or counterfeit appearance which conceals the real opinions or purpose. Dissimulation among statesmen is sometimes regarded as a necessary vice, or as no vice at all.
Let love be without dissimulation. Romans 12 .
Webster's Dictionary [3]
(n.) The act of dissembling; a hiding under a false appearance; concealment by feigning; false pretension; hypocrisy.