interphone /inˈtər-fōn/

An intercom

• invigilate
• invigilated
• invigilates
• invigilating
• invigilation
• invigilations
• invigilator
• invigilators
• invigorant
• invigorants
• invigorate
• invigorated
• invigorates
• invigorating
• invigoratingly
• invigoration
• invigorations
• invigorator
• invigorators
• invincibilities
• invincibility
• invincible
• invincibleness
• invinciblenesses
• invincibly