'amateurishly-constructed' originates from the word 'amateur,' which comes from French 'amateur,' meaning 'lover of,' and 'construct,' from Latin 'constructus,' meaning 'to build.'

'amateur' changed from the French word 'amateur' and 'construct' from Latin 'constructus,' eventually forming the modern English term 'amateurishly-constructed.'

Initially, 'amateur' meant 'lover of,' but over time it evolved to imply a lack of professional skill, especially in 'amateurishly-constructed.'