- (v.t.) To act against with equal force, power or effect; to thwart or overcome by such action; to furnish an equivalent to or for; to counterbalance; to compensate.
- (n.) Power or value sufficient to obviate any effect; equal weight, strength or value; equivalent; compensation; requital.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). countervail. Retrieved September 21, 2026, from http://smartdefine.org/countervail/definitions/1992299 |
| Chicago | Webster's. 2011. "countervail" http://smartdefine.org/countervail/definitions/1992299 (accessed September 21, 2026). |
| Harvard | Webster's 2011, countervail, Smart Define, viewed 21 September, 2026, <http://smartdefine.org/countervail/definitions/1992299>. |
| MLA | Webster's. "countervail" 27 May 2011. Web. 21 September 2026. <http://smartdefine.org/countervail/definitions/1992299> |