1. (n.) The quality or state of 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.

2. (n.) A state of extreme impiety or enmity to God.

3. (n.) Dangerous error, or schism, tending to draw persons to apostasy.