'beget' originates from Old English, specifically the word 'begietan,' where 'be-' meant 'by' and 'gietan' meant 'to get or obtain.'

'begietan' transformed into the Middle English word 'bigeten,' and eventually became the modern English word 'beget.'

Initially, it meant 'to obtain or acquire,' but over time it evolved into its current meaning of 'to cause or father.'