'carefully-constructed' originates from the combination of 'careful' and 'construct,' where 'careful' means 'done with care' and 'construct' means 'to build or form by putting together parts.'

'careful' changed from the Old English word 'carful,' and 'construct' from the Latin word 'constructus,' eventually forming the modern English term 'carefully-constructed.'

Initially, 'careful' meant 'full of care or concern,' and 'construct' meant 'to heap up or build,' evolving into the current meaning of 'meticulously built.'