ramshackle
Old, shaky, and poorly built, almost falling apart.
Ramshackle describes something that's falling apart, shaky, or barely holding together. A ramshackle old barn might have loose boards, a sagging roof, and doors hanging crooked on rusty hinges. A ramshackle fence leans at odd angles, with missing slats and wobbly posts.
The word captures that specific look of something that hasn't been properly maintained, where every part seems ready to collapse. Picture a treehouse built years ago that nobody has repaired: the ladder has missing rungs, the floor creaks, and the whole structure tilts to one side. That's ramshackle.
People sometimes use the word more broadly for anything that seems poorly organized or thrown together. A ramshackle plan might work but feels like it could fall apart at any moment, held together by luck rather than solid thinking. The word always suggests something that's functional enough to exist but looks like it won't last much longer without serious attention.