'reluctantly-assembled' originates from the combination of 'reluctantly' and 'assembled'. 'Reluctantly' comes from Latin 'reluctari', meaning 'to struggle against', and 'assembled' from Latin 'assemblare', meaning 'to bring together'.

'Reluctantly' changed from the Latin word 'reluctari' and 'assembled' from 'assemblare', eventually forming the modern English compound adjective 'reluctantly-assembled'.

Initially, 'reluctantly' meant 'struggling against', and 'assembled' meant 'brought together'. Over time, the compound adjective 'reluctantly-assembled' evolved to mean 'put together with hesitation'.