Same word as in-variant:
alike, balanced, changeless, consistent, constant, continual, continuous, direct, equable, equal, flush, homogenous, horizontal, invariable, level, matching, metrical, parallel, planate, plane, plumb, proportional, regular, right, same, smooth, square, stabile, stable, stead
alike, balanced, changeless, consistent, constant, continual, continuous, direct, equable, equal, flush, homogenous, horizontal, invariable, level, matching, metrical, parallel, planate, plane, plumb, proportional, regular, right, same, smooth, square, stabile, stable, stead