1. Five
   - quinque-

Encyclopedia: Penta-

• highly sensitive
• highly strung
• highly-developed
• highly-sexed
• highness
• highroad
• highschool
• hightail
• hightail it
• highwater
• highway
• formate
• formation
• formative
• formative cell
• formatted capacity
• formatting
• formed
• former
• Former Armed Forces
• former Yugoslav Republic of Macedonia
• formerly
• formic
• formic acid
• Formica