Synonyms for clearance
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- 1. clearance, interval, separation
- usage: the distance by which one thing clears another; the space between them
- 2. headroom, headway, clearance, room, way, elbow room
- usage: vertical space available to allow easy passage under something
- 3. clearance, license, permission, permit
- usage: permission to proceed; "the plane was given clearance to land"