'sloppily-prepared' originates from the English word 'sloppy,' which comes from the Middle English 'slop,' meaning 'muddy or wet.' The suffix '-ly' is used to form adverbs, and 'prepared' is derived from the Latin 'praeparare,' meaning 'to make ready beforehand.'

'sloppy' changed from the Middle English word 'slop' and eventually became the modern English word 'sloppy.' The phrase 'sloppily-prepared' combines 'sloppy' with 'prepared' to describe something done carelessly.

Initially, 'sloppy' meant 'muddy or wet,' but over time it evolved to mean 'careless or lacking precision,' which is reflected in the modern usage of 'sloppily-prepared.'