adulterate

adul·ter·ate

vt \ə-ˈdəl-tə-ˌrāt\

adul·ter·at·edadul·ter·at·ing

Definition of ADULTERATE

: to corrupt, debase, or make impure by the addition of a foreign or inferior substance; especially : to prepare for sale by replacing more valuable with less valuable or inert ingredients

—adul·ter·a·tor \-ˌrāt-ər\ noun