'intentionally-hidden' originates from the combination of 'intentionally' and 'hidden', where 'intentionally' comes from Latin 'intentio' meaning 'a stretching out' and 'hidden' from Old English 'hydan' meaning 'to hide'.

'intentionally' evolved from Latin 'intentio' through Old French 'intencion', and 'hidden' from Old English 'hydan', eventually forming the modern English term 'intentionally-hidden'.

Initially, 'intentionally' meant 'with intention or purpose', and 'hidden' meant 'concealed'. Together, they convey the idea of something being purposefully concealed.