Answer:

wreak

Answer	Crossword Clue
WREAK	Unleash, as havoc
WREAK	Cause, as havoc
WREAK	Inflict

WREAK	Unleash, as mayhem
WREAK	Unleash
WREAK	Inflict, as havoc
WREAK	Make havoc happen
WREAK	Incite, as havoc
WREAK	Cause, as in havoc
WREAK	Inflict, as vengeance
WREAK	Cause havoc

WREAK	Inflict.
WREAK	Execute in vengeance.
WREAK	Inflict vengeance.
WREAK	Give free play to, as anger.
WREAK	Work vengeance.
WREAK	Inflict (vengeance, etc.).
WREAK	Inflict (vengeance)
WREAK	Bring about

WREAK	Cause to happen, as havoc
WREAK	Vent with frenzy
WREAK	.... havoc
WREAK	Verb with havoc
WREAK	Inflict, as punishment
WREAK	Exact

Crossword

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