'overjoyed' originates from Middle English, specifically the word 'overjoyen,' where 'over-' meant 'excessively' and 'joyen' meant 'to rejoice.'

'overjoyen' transformed into the modern English word 'overjoyed' through the influence of Old French 'joie' meaning 'joy.'

Initially, it meant 'to rejoice excessively,' but over time it evolved into its current meaning of 'extremely happy or delighted.'