(a.) Not deeper than the skin; hence, superficial.

cursory deep deep-cut deep-down deep-engraven deep-fixed deep-laid deep-lying deep-reaching deep-rooted deep-seated deep-set deep-settled deep-sinking deep-sunk deep-sunken deepish deepsome depthless epidermal jejune knee-deep light not deep on the surface profound shallow shallow-rooted shoal skin-deep slight superficial surface thin trivial unprofound