Synonyms of clearance

Noun

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"

See also: clearance (Dictionary)