'thoughtfully-designed' originates from the combination of 'thoughtful' and 'design,' where 'thoughtful' means 'showing careful consideration' and 'design' means 'to plan or create something.'

'thoughtful' changed from the Old English word 'þohtful,' and 'design' from the Latin word 'designare,' eventually becoming the modern English words 'thoughtful' and 'design.'

Initially, 'thoughtful' meant 'full of thought,' and 'design' meant 'to mark out,' but over time they evolved into their current meanings of 'showing careful consideration' and 'to plan or create something.'