a level, abney level, air level, amplitude level, background level, biosafety level, biosafety level 1, biosafety level 2, biosafety level 3, biosafety level 4, brightness level, carpenter's level, college level, dependent, dependent clause, dependent on, dependent variable, dumpy level, energy level, fuel level, functional, functional anatomy, functional calculus, functional disorder, functional genomics, functional illiterate, functional magnetic resonance imaging, ground level, groundwater level, intensity level, level, level at, level best, level crossing, level head, level off, low level flight, mason's level, noise level, o level, on the level, plumb level, poverty level, pressure level, price level, sea level, signal level, sound pressure level, spirit level, split level, support level, surveyor's level, threshold level, water level, y level