Defn: To grow strong or stronger. The young disease, that must subdue at length, Grows with his growth, and strengthens with his strength. Pope.

STRENGTHENER
Strength"en*er, n.

Defn: One who, or that which, gives or adds strength. Sir W. Temple.

STRENGTHENING
Strength"en*ing, a.

Defn: That strengthens; giving or increasing strength. — Strength"en*ing*ly, adv. Strengthening plaster (Med.), a plaster containing iron, and supposed to have tonic effects.

STRENGTHFUL
Strength"ful, a.

Defn: Abounding in strength; full of strength; strong.
— Strength"ful*ness, n.
Florence my friend, in court my faction Not meanly strengthful.
Marston.

STRENGTHING
Strength"ing, n.

Defn: A stronghold. [Obs.]

STRENGTHLESS
Strength"less, a.