'unweeded' originates from the prefix 'un-' meaning 'not' and the word 'weeded' from Old English 'wēod' meaning 'plant that is not valued where it is growing.'

'unweeded' changed from the Old English word 'wēod' and eventually became the modern English word 'unweeded'.

Initially, it meant 'not cleared of unwanted plants,' and this meaning has largely remained the same in modern usage.