1. That which increases strength; strengthening medicine, or medicine that increases the action and energy of the vital powers.

Nuttall's Standard dictionary of the English language By Nuttall, P.Austin

• strengtheen,
• streangthened,
• stengthened,
• strenghthened,
• strengtheneth,
• strenghened,
• strangthened,
• strengthend,
• strengthned,
• strngthened,
• strenthened,
• srengthened,
• stregthened,
• strengtened,
• strengethened,
• strengtherner,
• strenthener,
• strenghener,
• strengtheer,
• stregnthener

• strangler,
• strangeness,
• stringently,
• strengthening,
• sternwheeler,
• strengthened,
• stringency,
• string tie,
• string line,
• string cheese,
• steering wheel,
• sternotherus,
• strengthen.

The adverb form of the word "strengthener" is "strengtheningly".

The adjective form of the word "strengthener" is "strengthening".

The plural of the "strengthener" can be the "strengtheners".

The singular of the "strengthener" can be the "strengthener".