This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

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adj. Likely to break or fall apart; shaky.

adj. Feeble with age; infirm.

adj. Of, having, or resembling rickets.

adj. Of an object: not strong or sturdy, as because of poor construction or upkeep; not safe or secure; giddy; shaky.

adj. Of a person: feeble in the joints; tottering.

adj. Affected with or suffering from rickets.

adj. Affected with rickets.

adj. Feeble in the joints; imperfect; weak; shaky.

Affected with rickets.

Feeble in the joints; tottering; infirm; hence, in general, shaky; liable to fall or collapse, as a table, chair, bridge, etc.; figuratively, ill-sustained; weak.

adj. lacking bodily or muscular strength or vitality

adj. inclined to shake as from weakness or defect

adj. affected with, suffering from, or characteristic of rickets

"I have one I haven't read yet (The Immortal, in rickety old hardback), which I'm sort of saving up, the way you save up the last shot of really fine whiskey."

frail    unstable    ill    sick   

weak   

imperfect    weak    shaky   

dilapidated    ramshackle    wooden    broken-down    shaky    unpainted    oaken    makeshift    wicker    wrought iron