half-baked
adjective
• not fully thought through; lacking a sound basis.
• "a half-baked conspiracy theory"
Similar:
not thought through,
not fully developed,
undeveloped,
unformed,
hare-brained,
poorly planned,
unplanned,
ill-conceived,
ill-judged,
impractical,
unrealistic,
unworkable,
injudicious,
ridiculous,
crazy,
crackpot,
cock-eyed,
