Pestilent, 1) producing, or relating to, the plague: “a foul and p. congregation of vapours,” Hml. II, 2, 315. “I'll make death love me, for I will contend even with his p. scythe,” Ant. III, 13, 194 (== the scythe of pestilence, the deaths occasioned by pestilence).
2) very disagreeable: “most p. to the hearing,” H8 I, 2, 49. “a p. knave,” Rom. IV, 5, 147. “to infect his ear with p. speeches of his father's death,” Hml. IV, 5, 91. “a p. gall to me,” Lr. I, 4, 127. “a p. complete knave,” Oth. II, 1, 252.