intentionally

happening by chance or unexpectedly or unintentionally

a fire that is set intentionally in order to slow an approaching forest fire or grassfire by clearing a burned area in its path n

n the backward escape of gases and unburned gunpowder after a gun is fired n a loud noise made by the explosion of fuel in the manifold or exhaust of an internal combustion engine n a fire that is set intentionally in order to slow an approaching forest fire or grassfire by clearing a burned area in its path n a miscalculation that recoils on its maker v come back to the originator of an action with an undesired effect v emit a loud noise as a result of undergoing a backfire v set a controlled fire to halt an advancing forest to prairie fire

reveal unintentionally v

v reveal unintentionally v deliver to an enemy by treachery v disappoint, prove undependable to