Answer:

keep

Answer	Crossword Clue
KEEP	".. on truckin'"
KEEP	Hang onto
KEEP	Subsistence

KEEP	Hang on to
KEEP	Steel family
KEEP	Don't give up
KEEP	Maintain
KEEP	Don't spoil
KEEP	What pack rats do
KEEP	Stay fresh
KEEP	Castle part

KEEP	Remain fresh
KEEP	Securest part of a castle
KEEP	Remain edible
KEEP	Retain
KEEP	".. your chin up!"
KEEP	Hold on to
KEEP	Medieval castle tower
KEEP	Don't let go

KEEP	Opposite of spoil
KEEP	Commemorate, as the Sabbath
KEEP	Hold onto
KEEP	Remain unspoiled
KEEP	Put in storage
KEEP	Start to KISS, as a matter of principle?
KEEP	Save up
KEEP	"a time to ..., and a time to throw away"

KEEP	Don't go sour
KEEP	Quarterback's option
KEEP	Hold
KEEP	Preserve
KEEP	Board and lodging
KEEP	Don't ditch
KEEP	Don't dump
KEEP	Save

KEEP	Don't sell
KEEP	Don't throw away
KEEP	Don't throw out
KEEP	Withhold
KEEP	Not rot