未搀杂的,纯粹的,真正的,非合金的
Unalloyed \Un`al*loyed"\, a.
Not alloyed; not reduced by foreign admixture; unmixed;
unqualified; pure; as, unalloyed metals; unalloyed happiness.
I enjoyed unalloyed satisfaction in his company.
--Mitford.
unalloyed
adj : used of metals