'ineptly-constructed' originates from the combination of 'ineptly' and 'constructed'. 'Ineptly' comes from the Latin word 'ineptus', meaning 'unsuitable', and 'constructed' is derived from the Latin 'constructus', meaning 'to build'.

'Ineptly' evolved from the Latin 'ineptus' through Old French 'inepte', while 'constructed' came from Latin 'constructus' through Middle English 'constructen'.

Initially, 'ineptly' meant 'unsuitable' and 'constructed' meant 'to build'. Together, they evolved to describe something built in a clumsy or poor manner.