"Thou Shalt Not Adulterate"

Adulterate - Adulteration - Adultry

a·dul·ter·ate

Adulterate;
3rd person present: adulterates;
past tense: adulterated;
past participle: adulterated;
gerund or present participle: adulterating

Render (something) poorer in quality by adding another substance, typically an inferior one.
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