Emily Dickinson Lexicon

DIS-SIM-U-LA'TION, n. [L. dissimulatio; dis and simulatio, from simulo, to make like, similis, 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. – Rom. xii.