The phrase 'carefully-cultivated' is a compound of 'carefully' and 'cultivated.' 'Carefully' comes from 'care' + '-fully,' and 'cultivated' is the past participle of 'cultivate,' which comes from Latin 'cultivare,' meaning 'to till or tend.'

'Carefully' and 'cultivated' were combined in modern English to describe something that is grown or developed with great care.

Initially, 'cultivated' referred only to land or crops, but over time, it has also come to mean developed or refined in a broader sense, especially when paired with 'carefully.'