to vitiate
(vish'-ee-ate) v.tr.
1: to reduce the value or impair the quality of.
2: to corrupt morally; debase.
3: to make ineffective; invalidate. [from Latin vitium "fault."]
Ashley.. 21.. Interior Design Major.. Set Designing hopeful.. Thorough Dreamer.. Appreciator of Intelligence.. Proctor of Nostalgia..