'doubtfully-assembled' originates from the English word 'doubtful,' which comes from the Old French 'doute,' meaning 'fear' or 'uncertainty,' and 'assemble,' from the Latin 'assimblare,' meaning 'to bring together.'

'doubtful' evolved from the Old French 'doute' and 'assemble' from the Latin 'assimblare,' eventually forming the modern English term 'doubtfully-assembled.'

Initially, 'doubtful' meant 'full of doubt or fear,' and 'assemble' meant 'to bring together.' Over time, 'doubtfully-assembled' came to mean 'put together in a questionable manner.'