'dubiously-constructed' originates from the word 'dubious,' which comes from Latin 'dubiosus,' meaning 'doubtful,' and 'constructed,' from Latin 'constructus,' meaning 'to build.'

'dubiosus' transformed into the Old French word 'doubious,' and eventually became the modern English word 'dubious.' 'Constructus' evolved into the Old French 'construire,' leading to the modern English 'construct.'

Initially, 'dubious' meant 'doubtful or uncertain,' and 'construct' meant 'to build.' The combination 'dubiously-constructed' implies a structure built with questionable integrity.