Strengthen(v. i.) To grow strong or stronger.
Strengthen(v. t.) To make strong or stronger; to add strength to; as, to strengthen a limb, a bridge, an army; to strengthen an obligation; to strengthen authority.
Strengthen(v. t.) To animate; to encourage; to fix in resolution.
Strengthened(imp. & p. p.) of Strengthen
Strengthener(n.) One who, or that which, gives or adds strength.
Strengthening(a.) That strengthens; giving or increasing strength.
Strengthening(p. pr. & vb. n.) of Strengthen
Words within strengthener