'fervently-built' originates from the combination of 'fervently,' derived from Latin 'ferventem,' meaning 'glowing, boiling,' and 'built,' from Old English 'byldan,' meaning 'to construct.'

'fervently' changed from the Latin 'ferventem' to the Old French 'fervent,' and eventually became the modern English 'fervently.' 'Built' evolved from the Old English 'byldan' to the modern English 'build.'

Initially, 'fervently' meant 'glowing or boiling,' but over time it evolved into its current meaning of 'intensely passionate.'