'unpredictably-constructed' originates from the combination of 'unpredictable' and 'constructed'. 'Unpredictable' comes from Latin 'un-' meaning 'not' and 'predict' from 'praedicere' meaning 'to say beforehand'. 'Constructed' comes from Latin 'constructus', past participle of 'construere', meaning 'to heap together'.

'Unpredictably-constructed' evolved from the combination of the words 'unpredictable' and 'constructed', which were used separately in English before being combined to describe something built in an unforeseen manner.

Initially, 'unpredictable' meant 'not able to be predicted', and 'constructed' meant 'built'. Together, they describe something built in a way that cannot be foreseen.