Weak; destitute of much physical strength; as, infants are feeble at their birth .

Infirm; sickly; debilitated by disease.

Debilitated by age or decline of life.

Not full or loud; as a feeble voice or sound.

Wanting force or vigor; as feeble efforts.

Not bright or strong; faint; imperfect; as feeble light; feeble colors.

Not strong or vigorous; as feeble powers of mind.

To weaken.