'lethargically-developed' originates from the Greek word 'lēthargia,' where 'lēthargia' meant 'forgetfulness' or 'drowsiness,' combined with the English word 'develop,' which comes from the Old French 'desveloper,' meaning 'to unwrap.'

'lethargia' transformed into the Latin 'lethargicus,' and eventually became the modern English word 'lethargic.' 'Develop' evolved from the Old French 'desveloper' to the modern English 'develop.'

Initially, 'lethargic' meant 'drowsy or forgetful,' but over time it evolved to mean 'sluggish or lacking energy.' 'Develop' has largely retained its meaning of 'to grow or expand.'