IPA: //ˌʌn.əˈlɔɪd//
KK: /ʌnˈælɔɪd/
Something that is pure and not mixed with anything else, often used to describe feelings or qualities that are complete and unqualified.
Her unalloyed joy was evident when she received the good news.
Unalloyed → It is formed from "un-" (meaning not) and "alloyed" (from the Old French *aleier*, meaning to mix or combine). The word "unalloyed" means not mixed or combined, referring to something that is pure and not adulterated.
Think of 'not' ('un-') mixed or combined ('alloyed') — that's why unalloyed means pure.