Answer:

fall

Answer	Crossword Clue
FALL	Spill
FALL	Leaf-changing season
FALL	When to take a foliage tour

FALL	Cooling off period?
FALL	Skating embarrassment
FALL	When leaves 56-Across
FALL	When many network shows debut
FALL	Occur
FALL	Time for TV debuts
FALL	Drop
FALL	Autumn

FALL	Ladder danger
FALL	Take a tumble
FALL	Mountaineer's worry
FALL	When new TV shows debut
FALL	When leaves turn
FALL	Be overthrown
FALL	Eden event
FALL	Take a spill

FALL	Pitch
FALL	Ebb
FALL	Suffer defeat
FALL	Subside
FALL	Cider season