'open-minded' originates from the combination of 'open' and 'mind,' where 'open' meant 'not closed' and 'mind' referred to 'the faculty of thought.'

'open-minded' evolved from the Middle English word 'open' and 'mind,' eventually becoming the modern English word 'open-minded.'

Initially, it meant 'having a mind that is open to new ideas,' and this meaning has largely remained the same in modern usage.