Unalloyed means pure and complete, without anything mixed in to weaken or spoil it. When something is unalloyed, it's the real thing through and through.

The word comes from metalworking. An alloy is a mixture of metals: bronze mixes copper and tin, while steel mixes iron and carbon. These mixtures are useful because they're often stronger than pure metals alone. But unalloyed gold or silver contains no other metals. It's completely pure.

We use the word mostly to describe feelings and experiences. Unalloyed joy means happiness with nothing to dampen it, no worries mixed in. When you receive unalloyed praise, someone compliments you without any criticism or “but” attached. A student might feel unalloyed relief when a dreaded presentation finally ends well, with no lingering anxiety about how it went.

The word suggests something rare and valuable. Most experiences in life are mixed: you might enjoy a vacation but miss your friends, or win a game but feel bad for the losing team. Moments of unalloyed happiness, where nothing clouds your pleasure, stand out precisely because they're uncommon. When you encounter unalloyed kindness or unalloyed enthusiasm, you're experiencing something wonderfully simple and whole.