The superlative form of 'simple,' meaning the easiest to understand or the least complicated.
From Latin 'simplex' meaning 'without folds' or 'plain,' from 'sin-' (one) and 'plexus' (fold). The superlative '-est' creates 'simplest.' The word originally referred to things that were literally unfolded.
The word 'simple' comes from 'without folds'—a brilliantly literal image from Latin where complex things are 'folded' and simple things are unfolded and open—showing how ancient people thought about complexity as something layered and hidden.
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