'eulogize' originates from Greek, specifically the word 'eulogizein', where 'eu-' meant 'good/well' and 'logizein' meant 'to speak or reckon'.

'eulogize' changed from Greek 'eulogizein' into Late Latin/Medieval Latin forms (for example 'eulogizare') and was adopted into English as 'eulogize' in the modern period.

Initially, it meant 'to speak well of' or 'to give praise,' and over time it has retained that core meaning, often used particularly for praise given at funerals or memorials.