'unthrowable' originates from the English prefix 'un-' meaning 'not' and the word 'throw,' which comes from Old English 'þrāwan,' meaning 'to twist or turn.'

'throw' changed from the Old English word 'þrāwan' and eventually became the modern English word 'throw.'

Initially, 'throw' meant 'to twist or turn,' but over time it evolved into its current meaning of 'to propel something through the air.'