'astonishingly-unveiled' is a compound word combining 'astonishingly' and 'unveiled'. 'Astonishingly' originates from 'astonish', which comes from the Old French 'estoner', meaning 'to stun or amaze'. 'Unveiled' comes from 'unveil', which is derived from the prefix 'un-' meaning 'not' and 'veil', from the Latin 'velum', meaning 'a covering'.

'astonishingly' evolved from the Old French 'estoner' to the modern English 'astonish', with the adverbial form 'astonishingly' developing later. 'Unveiled' evolved from the Latin 'velum' through Old French 'veile' to the modern English 'veil', with the prefix 'un-' added to form 'unveil'.

Initially, 'astonish' meant 'to stun or amaze', and 'veil' meant 'a covering'. Over time, 'astonishingly' came to mean 'in a manner that amazes', and 'unveiled' came to mean 'revealed'.