v. loosed, loos·ing, loos·es
v. tr.
To let loose; release: loosed the dogs.
To make loose; undo: loosed his belt.
To cast loose; detach: hikers loosing their packs at camp.
To let fly; discharge: loosed an arrow.
To release pressure or obligation from; absolve: loosed her from the responsibility.
To make less strict; relax: a leader's strong authority that was loosed by easy times.
v. intr.
To become loose.
To discharge a missile; fire.
Source:
The American Heritage® Dictionary of the English Language, Fourth Edition