sumo, -a, highest, greatest, very great.
suntuoso, -a, sumptuous.
superficie, f., surface.
superior, superior.
superstición, f., superstition.
supersticioso, -a, superstitious.
suplicante, suppliant, imploring.
suplicio, m., execution.
suposición, f., supposition, guess, surmise.
surcar, to plow, furrow, divide.