'disconcert' originates from French, specifically the word 'déconcerter,' where 'dé-' meant 'apart' and 'concerter' meant 'to bring together.'

'déconcerter' transformed into the English word 'disconcert' during the 17th century.

Initially, it meant 'to throw into confusion,' but over time it evolved into its current meaning of 'to disturb the composure of.'