IPA: /ˌpriːprɪˈpɜːrd/
KK: /priˈprɛpərd/
Made ready beforehand, often for convenience or efficiency.
The preprepared meals saved us a lot of time during the busy week.
To have made something ready in advance, especially food or materials, before it is needed.
The chef preprepared the ingredients to save time during the busy dinner service.
Past: preprepared
Past Participle: preprepared
Preprepared is formed from "pre-" (meaning before) and "prepared" (from Latin "parare", meaning to make ready). The word means to make something ready in advance.
Think of getting something ready 'before' ('pre-') it is needed — that's what preprepared means.