'sturdy' originates from Old French, specifically the word 'estourdi,' where 'estourdi' meant 'dazed or stunned.' 'Construct' originates from Latin, specifically the word 'construere,' where 'con-' meant 'together' and 'struere' meant 'to pile up or build.'

'sturdy' changed from the Old French word 'estourdi' and eventually became the modern English word 'sturdy.' 'Construct' evolved from the Latin 'construere' to the modern English 'construct.'

Initially, 'sturdy' meant 'dazed or stunned,' but over time it evolved into its current meaning of 'strong and robust.' 'Construct' has largely retained its original meaning of 'to build or form.'