Answer:

implode

Answer	Crossword Clue
IMPLODE	Collapse
IMPLODE	Burst like a vacuum tube
IMPLODE	Succumb to water pressure, perhaps

IMPLODE	Self-destruct
IMPLODE	Collapse inwardly
IMPLODE	Collapse inward
IMPLODE	Burst inward
IMPLODE	Burst in
IMPLODE	Opposite of burst
IMPLODE	Collapse, in a way