Answer:

ageing

Answer	Crossword Clue
AGEING	Gerontologist's study
AGEING	Getting on
AGEING	Maturing

AGEING	Cheesemaker's concern
AGEING	Getting older
AGEING	Getting better, as wine: Var.
AGEING	Inexorable process
AGEING	Inevitability of life
AGEING	Maturation process (Var.)
AGEING	Getting older (Var.)
AGEING	Growing older (Var.)

AGEING	Getting on, so to speak (Var.)
AGEING	Getting on in years: Brit.
AGEING	Getting on (Var.)
AGEING	Unavoidable process

Crossword

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