IPA: /ʌnˈpækər/
KK: /ʌnˈpækər/
A person or program that removes items from a package or container, or a software that decompresses files.
The unpacker quickly extracted all the files from the compressed folder.
Unpacker → It is formed from "un-" (meaning not or opposite of) and "pack" (from Old French *pacquer*, meaning to pack or bundle) and "-er" (meaning a person who). The word "unpacker" refers to a person who unpacks or removes items from a packed state.
Think of someone who is the opposite of packing — they are 'removing' ('un-') items that have been 'bundled' ('pack'). This helps you remember that an unpacker is someone who takes things out of a package.