insufficiently cooked.

not completed; insufficiently planned or prepared

a half-baked proposal for tax reform.

lacking mature judgment or experience; unrealistic.

adjective

intelligent , smart , thoughtful , wise

adjective

backward , batty * , birdbrained , blockheaded , boneheaded , brainless , crazy , dumb , feeble-minded , foolish , harebrained * , idiotic , ignorant , ill-conceived , imbecilic , impractical , indiscreet , moronic , poorly planned , retarded , senseless , short-sighted , silly , slow , sophomoric , underdeveloped , unformed , witless