Answer:

amassing

Answer	Crossword Clue
AMASSING	Gathering
AMASSING	Gathering together
AMASSING	Piling up

AMASSING	Stockpiling
AMASSING	Getting together
AMASSING	Heaping up.
AMASSING	Collecting.
AMASSING	Piling up.
AMASSING	Gathering.
AMASSING	Accumulating
AMASSING	Hoarder's activity

AMASSING	Laying in a store
AMASSING	Building up

Crossword

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