The action of fail, v., in various senses; an instance of this, a failure. †for, without (any) failing = for, without fail (see fail, n.1).

The fact of becoming sick or ill; an instance of this.

Gradual decay of life or organic tissue; gradual loss of strength and vitality; consumption, atrophy.

A downward slope; decline, descent (literal and figurative).

Hurtful relaxation, softening, or weakening; enfeeblement. Obsolete.

The action of debilitating; debilitated condition; weakening.

A growing feeble or faint-hearted; depression, discouragement.

weakening.

The action of enervating; the state of being enervated: see enervate, v.

Of the sun, etc.: Descent towards setting; hence of the day, one's life, etc.: Drawing to its close; = decline, n. 2.

Decline of the vital energy or faculties (through disease or old age); breaking up of the health and constitution; formerly also (with plural)…

The action of flag, v.1

Weakening, deterioration; an instance of this. Also: overthrow, downfall.

Reduction or loss of strength (of the body or a part or function of the body); an instance of this; esp. an episode of fainting or a feeling of…

The action of dead, v.; deadening. Obsolete.

Lowering of force or strength; diminution or weakening (of the bodily strength or appetite).

= failure, n. 2. Obsolete.

Deterioration of the body.

A gradual failure of the physical powers, as in the later years of life.

The action of sap, v.1 in various senses; an instance of this.

Of the animal functions, or health (esp. of the mental powers).

The process of weakening, as if by dilution; diminution of characteristic force. spec. of a disease, or of the pathogenicity of a micro-organism…