'swiftly-assembled' originates from the combination of 'swiftly,' an adverb meaning 'quickly,' and 'assembled,' the past participle of 'assemble,' which comes from the Latin word 'assemblare,' meaning 'to bring together.'

'assemble' changed from the Old French word 'assembler' and eventually became the modern English word 'assemble.'

Initially, 'assemble' meant 'to bring together,' and over time it evolved to include the idea of constructing or putting together parts.