1. One and a half

Encyclopedia: Sesqui-

• French horn
• French Indochina
• French kiss
• French knickers
• French knot
• French lavender
• French leave
• French lesson
• French letter
• French loaf
• French marigold
• French Oceania
• French omelet
• French pancake
• French pastry
• French people
• French person
• French polish
• French polish shellac
• French Polynesia
• French region
• French Republic
• French Revolution
• French Riviera
• French roof