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

• safe-breakers
• safe-breaking
• safe-conduct
• safe-cracker
• safe-cracking
• safed
• safe-deposit
• safe-deposits
• safeguard
• safeguarded
• safeguarding
• safeguards
• safe haven
• safe havens
• safe house
• safe houses
• safekeeping
• safe light
• safe lights
• safely
• safeness
• safenesses
• safe period
• safe periods
• safer