'strongly-constructed' originates from the combination of 'strongly' and 'constructed', where 'strongly' is derived from 'strong', meaning 'having great physical power', and 'constructed' is derived from 'construct', meaning 'to build or form'.

'strongly' changed from the Old English word 'strang' and 'constructed' from the Latin word 'constructus', eventually forming the modern English term 'strongly-constructed'.

Initially, 'strongly-constructed' meant 'built with strength', and this meaning has largely remained the same in modern usage.