That depends on the type of damage being done and the state of the damaged object after the damage has been done. Possible words include vaporize, disintegrate, destroy, wound, blast into oblivion, implode, explode, erode, corrupt, and cataclysmically remove from existence.
flog
another word could be difficult or severely
extreme, strong, radical, severe, harsh
As a verb the word "wreck" means to destroy or damage something. As a noun, the word refers to something that has been so severely damaged as not to be worth repairing.
Destruction
Severely is an adverb.
more severely
the get severely damage
damage. harm, injury, hurt
ShatteredBrokenTatteredIn piecesDestroyedUndone
Smoking can severely damage your lungs by destroying the air sacs in them, making it hard to breathe.
badly; brutally; cruelly; harshly; seriously; sternly; strictly; relentlessly; rigorously; ruthlessly;