'limpid' originates from Latin, specifically the word 'limpidus', where 'limpidus' meant 'clear, transparent'.

'limpid' changed from the Latin word 'limpidus' (used in Classical and Medieval Latin) and entered English in the early modern period as 'limpid' with little alteration in form.

Initially, it meant 'clear' or 'transparent' (especially of liquids), and over time it retained that basic sense while also extending metaphorically to mean 'clear, easily understood' in writing or expression.