(a.) Of or pertaining to a monolith; consisting of a single stone.

accordant alike austere automatic balanced bare basic characterless chaste colossal consistent consonant constant continuous correspondent craggy crystal crystalline elementary enormous equable equal essential even featureless flat fundamental giant gigantic gravelly gritty homely homespun homogeneous huge immovable immutable impenetrable imposing indivisible inflexible intractable invariable invulnerable irreducible lapideous level lithoid lithoidal massive measured mechanical mere methodic monumental of a piece ordered orderly pebbled pebbly persistent plain porphyritic primal primary pure pure and simple regular rigid robotlike rock-ribbed rock-strewn rock-studded rocklike rocky sandy severe shingled shingly simon-pure simple single smooth solid spare stable stark steadfast steady stolid stonelike stony systematic trachytic unadorned unbending unbroken unchangeable unchanged unchanging uncluttered undeviating undifferenced undifferentiated undiversified uniform unruffled unvaried unvarying