1. One who, or that which, hardens, esp. a substance causing glues, paints, etc, to harden

Derived forms: hardeners

• group participation
• group practice
• group psychotherapy
• group Pteridospermae
• group Pteridospermaphyta
• group theory
• group therapy
• grouped
• grouper
• groupie
• grouping
• groupthink
• Zoroastrianism
• zoster
• Zostera
• Zostera marina
• Zosteraceae
• Zouave
• zouk
• zounds
• Zovirax
• zoysia
• Zoysia japonica
• Zoysia matrella
• Zoysia tenuifolia