Answer:

irrupt

Answer	Crossword Clue
IRRUPT	Increase rapidly
IRRUPT	Rush in
IRRUPT	Burst in

IRRUPT	Burst in.
IRRUPT	Intrude suddenly
IRRUPT	Enter uninvited
IRRUPT	Burst in suddenly
IRRUPT	Burst suddenly

Crossword

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