1. (a.) Not potent; lacking power, strength, or vigor, whether physical, intellectual, or moral; deficient in capacity; destitute of force; weak; feeble; infirm.

2. (a.) Wanting the power of self-restraint; uncontrolled; ungovernable; violent.

3. (a.) Wanting the power of procreation; unable to copulate; also, sometimes, sterile; barren.

4. (n.) One who is impotent.