'thoughtfully-considered' originates from the combination of 'thoughtful' and 'considered', where 'thoughtful' meant 'full of thought' and 'considered' meant 'carefully weighed'.

'thoughtful' changed from the Old English word 'þohtful' and 'considered' from the Latin word 'considerare', eventually becoming the modern English word 'thoughtfully-considered'.

Initially, 'thoughtful' meant 'full of thought', and 'considered' meant 'carefully weighed', evolving into the current meaning of 'carefully and deliberately thought out'.