'jointedly' originates from English, specifically formed from the adjective 'jointed' + the adverbial suffix '-ly', where '-ly' meant 'in the manner of'.

'jointed' changed from Middle English/Old French 'joint' (Old French 'joint' < Latin 'iunctus', past participle of 'iungere'/'jungere' meaning 'to join') and eventually became the modern English adjective 'jointed', from which 'jointedly' was formed by adding '-ly'.

Initially related to being 'joined' or 'connected' (from Latin for 'to join'), over time it evolved into an adverb meaning 'in a joined or combined manner' (now largely replaced by 'jointly').