BITTERNESS n. 3 definitions
f being bitter, sharp, or acrid, in either a literal or figurative sense; implacableness; resentfulness; severity; keenness of reproach or sarcasm; deep distress, grief, or vexation of mind. The lip that curls with bitterness. Percival. I will complain in the bitterness of my soul. Job vii. 11.
BLACKGUARD n. 6 definitions
ns and lower menials of a court, or of a nobleman's household, who, in a removal from one residence to another, had charge of the kitchen utensils, and being smutted by them, were jocularly called the "black guard"; also, the servants and hangers-on of an army. [Obs.] A lousy slave, that . . . rode with the black guard…