SuaviloquyToday’s word

deceiver

Deceiver, n.

One who deceives; one who leads into error; a cheat; an impostor. The deceived and the deceiver are his. Job xii. 16.

Syn. -- Deceiver, Impostor. A deceiver operates by stealth and in private upon individuals; an impostor practices his arts on the community at large. The one succeeds by artful falsehoods, the other by bold assumption. The faithless friend and the fickle lover are deceivers; the false prophet and the pretended prince are impostors.

Shades of meaning

Fernald has no entry of its own for deceiver; he lists it under hypocrite.

Where he writes about it:

Deceiver is the most comprehensive term, including all the other words of the group. — from hypocrite
The deceiver seeks to give false impressions of any matter where he has an end to gain; the dissembler or hypocrite seeks to give false impressions in regard to himself. — from hypocrite