'rudimentary' originates from Latin, specifically the word 'rudimentarius,' where 'rudimentum' meant 'early training or first attempt.'

'rudimentarius' transformed into the French word 'rudimentaire,' and eventually became the modern English word 'rudimentary' through Middle English.

Initially, it meant 'early training or first attempt,' but over time it evolved into its current meaning of 'basic or undeveloped.'