- (v.t.) To cause to fail of effect, either wholly or in part; to make void; to destroy, as the validity or binding force of an instrument or transaction; to annul; as, any undue influence exerted on a jury vitiates their verdict; fraud vitiates a contract.
- (v.t.) To make vicious, faulty or imperfect; to render defective; to injure the substance or qualities of; to impair; to contaminate; to spoil; as, exaggeration vitiates a style of writing; sewer gas vitiates the air.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). vitiate. Retrieved September 26, 2026, from http://smartdefine.org/vitiate/definitions/2079965 |
| Chicago | Webster's. 2011. "vitiate" http://smartdefine.org/vitiate/definitions/2079965 (accessed September 26, 2026). |
| Harvard | Webster's 2011, vitiate, Smart Define, viewed 26 September, 2026, <http://smartdefine.org/vitiate/definitions/2079965>. |
| MLA | Webster's. "vitiate" 28 May 2011. Web. 26 September 2026. <http://smartdefine.org/vitiate/definitions/2079965> |