inroad /inˈrōd/

1. An incursion into an enemy's country
2. A raid
3. Encroachment

make inroads into

1. To make progress with
2. To use up large quantities of

• sillinesses
• sillock
• sillocks
• sills
• silly
• silly-billies
• silly-billy
• silly-how
• silly-hows
• silly money
• silly season
• silly seasons
• Silly String®
• silo
• silo'd
• siloed
• siloing
• silos
• siloxane
• siloxanes
• silphia
• silphium
• silphiums
• silt
• siltation