Meanings of profound dissimulation in английском

Now, this question was put by Ungque through profound dissimulation.

Fitzgerald's profound dissimulation caused a smile to cross Maurice's lips.

He equalled Metternich or Talleyrand in his profound dissimulation, for European diplomacy has ever been based on this.

His Indian majesty received them with becoming hospitality, though his profound dissimulation corresponded but too well with the treacherous designs of his followers.

If your wife is a woman of profound dissimulation, the question is, what signs will indicate to her the motives of your long mystification?

Wotton was master of profound dissimulation, and knew how to cover, under the appearance of a careless gayety, the deepest designs and most dangerous artifices.