'ambiguously-formed' originates from the Latin word 'ambiguus,' meaning 'doubtful' or 'uncertain,' combined with the English word 'formed,' meaning 'shaped or structured.'

'Ambiguus' transformed into the Old French word 'ambigu,' and eventually became the modern English word 'ambiguous.'

Initially, 'ambiguus' meant 'doubtful or uncertain,' and this meaning has largely remained the same in modern usage.