- (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.
- (n.) A state of extreme impiety or enmity to God.
- (n.) Dangerous error or schism, tending to draw persons to apostasy.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). bitterness. Retrieved September 23, 2026, from http://smartdefine.org/bitterness/definitions/1980642 |
| Chicago | Webster's. 2011. "bitterness" http://smartdefine.org/bitterness/definitions/1980642 (accessed September 23, 2026). |
| Harvard | Webster's 2011, bitterness, Smart Define, viewed 23 September, 2026, <http://smartdefine.org/bitterness/definitions/1980642>. |
| MLA | Webster's. "bitterness" 27 May 2011. Web. 23 September 2026. <http://smartdefine.org/bitterness/definitions/1980642> |