1. most likely to break or fall apart; most unstable or shaky (superlative form of rickety)

Examples

• That’s the ricketiest ladder I’ve ever seen.
• The ricketiest chair in the room finally collapsed.
• We avoided the ricketiest section of the old bridge.
• His ricketiest excuse yet was that aliens stole his homework.
• The ricketiest part of the fence needs immediate repair.
• She chose the ricketiest cart at the grocery store by accident.