Something rickety — like an old shack — is shaky and likely to fall down because it's fragile.

Some buildings are sturdy, solid, and strong. Others are rickety: rickety things might blow over from a slight breeze. Rickety things are poorly designed or have just become rickety because of aging. Rickety things tend to shake, which is a sign they might fall apart any second. If you put a heavy load in a rickety cart, you might lost your load!

Definitions of rickety

adj inclined to shake as from weakness or defect

“a rickety table”
shaky, wobbly, wonky
lacking stability or fixity or firmness

adj lacking bodily or muscular strength or vitality

debile, decrepit, feeble, infirm, sapless, weak, weakly
physically weak

adj affected with, suffering from, or characteristic of rickets

rickety limbs and joints”
ill, sick
affected by an impairment of normal physical or mental function

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