Answer:

CURDLE

Answer	Crossword Clue
CURDLE	Get lumpy
CURDLE	Turn bad, as milk
CURDLE	Spoil

CURDLE	Turn sour
CURDLE	Congeal or thicken.
CURDLE	Coagulate.
CURDLE	Coagulate
CURDLE	Congeal
CURDLE	Turn
CURDLE	Sour
CURDLE	Become lumpy

CURDLE	Turn, in a way

Crossword

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