'inconsistently-built' originates from the English word 'inconsistent,' which is derived from Latin 'inconsistens,' where 'in-' meant 'not' and 'consistens' meant 'standing firm.'

'inconsistens' transformed into the Old French word 'inconsistant,' and eventually became the modern English word 'inconsistent.'

Initially, it meant 'not standing firm,' but over time it evolved into its current meaning of 'lacking consistency or regularity.'