'badly-delivered' originates from Modern English, formed as a compound of the adverb 'badly' and the past-participial adjective 'delivered', where 'badly' means 'in a bad manner' and 'deliver' ultimately comes via Old French 'delivrer'.

'deliver' changed from Old French 'delivrer' into Middle English forms such as 'deliveren' and eventually became the modern English 'deliver'; 'badly' derives from Old English roots for 'bad' combined with the adverbial suffix.

Initially related elements like 'deliver' had senses of 'set free' or 'hand over', but over time the verb's common meaning shifted to 'bring/hand over/perform', and the compound now describes the manner ('in a poor way') in which something was delivered.