'misjudge' originates from Middle English, specifically the prefix 'mis-' meaning 'wrongly' and the word 'judge' from Old French 'jugier', meaning 'to judge'.

'misjudge' changed from the Old French word 'jugier' and eventually became the modern English word 'misjudge'.

Initially, it meant 'to judge wrongly', and this meaning has largely remained the same in modern usage.