level(redirected from no observed effect level)
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level(Balance), noun aligned, equal, equal on a plane, even, exact, in the same plane, matched, of the same height, same, standard, straight, uniform
level(Grade), noun advanced status, class, freshman, graduate, junior, program, senior, seniority, sophomore, status, underclassman, undergraduate, year, year of graduation, year of studies
level(Plane), noun bank, deep slope, distance uppard, easy slope, elevation, equal, exact, flat, flat surface, flattened, flush, grade, gradient, inclination, incline, inclined plane, on a line, parallel, pitch, slope, steep slope
See also: adjust, balance, coequal, commensurable, destroy, efface, extirpate, obliterate, pillage, regulate, subvert