Palsy means: A condition that causes partial paralysis where a body part is unable to move freely. Bell’s paralysis, for example, is a localized paralysis in one of the facial muscles.
(in Medical Dictionary)

What else does Palsy mean?

Partial or complete muscle paralysis can be accompanied with loss of sensation, uncontrolled body movements and tremors.
(in Merlin Dictionary)

This influence is thought to cause an enfeebled or debilitating condition.
(in Merlin Dictionary)

An intense emotion that is characterized by inability to act.
(in Merlin Dictionary)

To be without strength.
(in Merlin Dictionary)

As with fear, to make one helpless.
(in Merlin Dictionary)