1. things that make something stronger or more powerful
Usage: plural form

Examples

• The gym offers various muscle strengtheners for different workout routines.
• These vitamin supplements act as immune system strengtheners.
• The construction crew added steel strengtheners to support the bridge.
• Hair strengtheners can help reduce breakage and improve texture.
• The coach recommended specific exercises as ankle strengtheners after the injury.
• These metal brackets serve as structural strengtheners for the shelving unit.