'inconsistently-formed' originates from the prefix 'in-' meaning 'not,' combined with 'consistent,' which comes from Latin 'consistere,' meaning 'to stand firm,' and 'formed,' from Latin 'formare,' meaning 'to shape.'

'inconsistently-formed' evolved from the combination of 'inconsistent' and 'formed,' both of which have Latin roots.

Initially, it meant 'not uniformly shaped,' and this meaning has largely remained the same in modern usage.