'rant' originates from Dutch, specifically the word 'ranten,' where 'ranten' meant 'to talk foolishly or extravagantly.'

'ranten' transformed into the English word 'rant' during the 16th century, and eventually became the modern English word 'ranting' as a present participle.

Initially, it meant 'to talk foolishly or extravagantly,' but over time it evolved into its current meaning of 'to speak or shout in a loud, uncontrolled, or angry way.'