'extraordinariness' originates from Latin, specifically the word 'extraordinarius', where 'extra-' meant 'outside' and 'ordinarius' meant 'regular, ordered'.

'extraordinariness' changed from the Middle English form 'extraordinarinesse' (influenced by Old French 'extraordinaire' and the English suffix '-ness') and eventually became the modern English word 'extraordinariness'.

Initially, it meant 'outside the usual order' or 'unusual', but over time it evolved into its current meaning of 'the quality of being extraordinary'.