Wiktionary
a. (archaic form of deceitful English)
Usage examples of "deceitfull".
The Physitian would have gone immediately home to receive a counterpoyson, to expeth and drive out the first poyson : But the wicked woman persevering in her mischiefe, would not suffer him to depart a foot, untill such time as the poyson began to worke in him, and then by much prayer and intercession she licensed him to goe home: By the way the poyson invaded the intrailes and bowels of the whole body of the Physitian, in such sort that with great paine he came to his owne house, where he had scarce time to speake to his wife, and to will her to receive the promised salitary of the death of two persons, but he yeelded up the ghost : And the other young man lived not long after, but likewise dyed, amongst the feined and deceitfull teares of his cursed wife.