A will vitiated and growth out of love with the
truth disposes the understanding to error and
delusion. --South.
Without care it may be used to vitiate our minds.
--Burke.
This undistinguishing complaisance will vitiate the
taste of readers. --Garth.
2. 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.