Answer:

alloyed

Answer	Crossword Clue
ALLOYED	Impure
ALLOYED	Impaired by mixture.
ALLOYED	Made an amalgam

ALLOYED	Mixed with a lesser metal
ALLOYED	Blended in dear old Yale

Crossword

a puzzle consisting of a grid of squares and blanks into which words crossing vertically and horizontally are written according to clues.