Answer:

boom

Answer	Crossword Clue
BOOM	Baby ..
BOOM	Bust's opposite
BOOM	Prosperous period

BOOM	Period of great growth
BOOM	Economic upturn
BOOM	Sound of thunder
BOOM	Up time
BOOM	Prosperity
BOOM	Growth period
BOOM	Mike support
BOOM	Good time

BOOM	High time
BOOM	Thriving time
BOOM	Crane component
BOOM	Period of prosperity
BOOM	Surge in sales
BOOM	Hiring may accompany one
BOOM	Rapid economic expansion
BOOM	"Kablooie!"

BOOM	It may be sonic
BOOM	Period of economic growth
BOOM	Artillery sound
BOOM	Economic upswing
BOOM	Bust alternative
BOOM	Good economic news
BOOM	Bust's antithesis
BOOM	Prosperous time

BOOM	Fireworks feature
BOOM	Good news for the economy
BOOM	Gunshot sound
BOOM	Microphone holder
BOOM	Big bang
BOOM	Stretch of good results
BOOM	Rapid upsurge in prosperity
BOOM	Sound heard on the Fourth of July

BOOM	Explosive sound
BOOM	"Bam!"
BOOM	Dynamite sound
BOOM	Swinging part of a sailboat
BOOM	Horizontal spar