'amateur-monitored' originates from the combination of 'amateur' and 'monitored'. 'Amateur' comes from the French word 'amateur', meaning 'lover of', and 'monitored' is derived from the Latin 'monere', meaning 'to warn'.

'amateur' was borrowed from French in the 18th century, while 'monitored' evolved from the Latin 'monere' through Old French 'monitour'.

Initially, 'amateur' meant 'lover of', but over time it evolved to mean 'non-professional'. 'Monitored' has largely retained its original meaning of 'to oversee or watch'.