Rigidity; stiffness.

A sense of chilliness, with contraction of the skin; a
convulsive shuddering or tremor, as in the chill preceding a fever.

The becoming stiff or rigid; the state of being rigid;
rigidity; stiffness; hardness.

See 1st Rigor, 2.

Severity of climate or season; inclemency; as, the rigor of
the storm; the rigors of winter.

Stiffness of opinion or temper; rugged sternness; hardness;
relentless severity; hard-heartedness; cruelty.

Exactness without allowance, deviation, or indulgence;
strictness; as, the rigor of criticism; to execute a law with rigor; to
enforce moral duties with rigor; – opposed to lenity.

Severity of life; austerity; voluntary submission to pain,
abstinence, or mortification.

Violence; force; fury.