half-baked

You can use the adjective half-baked to describe your sadly underdone cupcakes, or in a figurative way to criticize your brother's crazy business idea.

When something's half-baked, it's just never going to work. If your plan for moving to Iceland is half-baked, it means you haven't thought the whole thing through. This metaphorical meaning came from the original definition of half-baked, literally "baked halfway" or "underdone." If something's half-baked, nobody wants to eat it — it's useless. An idea or plan, likewise, is half-baked if isn't worth wasting time on.

Definitions of half-baked
  1. adjective
    insufficiently cooked
    synonyms: underdone
    raw
    not treated with heat to prepare it for eating
  2. adjective
    foolish; totally unsound
    half-baked ideas”
    synonyms: crazy, screwball, softheaded
    impractical
    not practical; not workable or not given to practical matters
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