9 letters · 19 points in Scrabble
noun the state of impairing the quality or reducing the value of something
noun an additional ingredient that is added by mixing with the base
noun the act of mixing together
originFrom Latin admixtūra, from admixtus, past participle of admisceō (“to mix in”), from misceō (“to mix”). Analyzable as ad- + mixture.
Etymology from Wiktionary, CC BY-SA 3.0