likely to fall or collapse; shaky

a rickety chair.

feeble in the joints; tottering; infirm

a rickety old man.

old, dilapidated, or in disrepair.

irregular, as motion or action.

affected with or suffering from rickets.

pertaining to or of the nature of rickets.

noun

instability , precariousness , shakiness , unsteadiness , wobbliness