GRE

sophistry - seemingly plausible but fallacious reasoning

sophist - teacher of philosophy; quibbler; employer of fallacious reasoning

sophomoric - immature; shallow

soporific - sleep producing

sordid - filthy; base; vile :: vile

spangle - small metallic piece sewn to clothing for ornamentation

spartan - lacking luxury and comfort; sternly disciplined

spasmodic - fitful; periodic

spate - sudden flood

spatial - relating to space

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