vitiate

动词 vitiate:

1. corrupt morally or by intemperance or sensuality
   同义词：corrupt, pervert, subvert, demoralize, demoralise, debauch, debase, profane, deprave, misdirect
2. make imperfect
   同义词：mar, impair, spoil, deflower
3. take away the legal force of or render ineffective
   同义词：invalidate, void

vi.ti.ate

v.tr.（及物动词）
vi.ti.at.ed,vi.ti.at.ing,vi.ti.ates
To reduce the value or impair the quality of.
使变质，损坏：降低价值或损害质量
To corrupt morally; debase.
道德败坏；使堕落
To make ineffective; invalidate.See Synonyms at corrupt
使无效；使失效参见 corrupt

来源：
Latin viti3re viti3t-
拉丁语 viti3re viti3t-
from vitium [fault]
源自 vitium [错误]

【引伸】
vi.tiable
vi.tia.tion
n.（名词）
vi.tia.tor
n.（名词）