Kludge

Definitions

1. An improvised device, typically crudely constructed to test the validity of a principle before implementing a finished design.
   informal
2. Any construction or practice, typically crude yet effective, designed to solve a problem temporarily or expediently.
   informal
3. An amalgamated mass of unrelated parts.
   informal
4. A badly written or makeshift piece of software; a hack.
   informal

Equivalents

CEFR level