'reassert' originates from the prefix 're-' meaning 'again' and the verb 'assert' from Latin 'assertus', past participle of 'asserere', meaning 'to join to'.

'assert' changed from the Latin word 'asserere' and eventually became the modern English word 'assert'.

Initially, it meant 'to join to', but over time it evolved into its current meaning of 'to state or declare positively'.