the.com/unsteady
When gravity files a formal complaint and your knees take it personally.
means Lacking firm balance, stability, or control — wobbly in body, object, or resolve.
from Old English steady comes from stede, a place or standing; add un- and you literally un-place yourself, robbed of solid ground.
Sailor's curseSea legs are unsteady legs adapting to motion.
Inner earTiny fluid loops decide if you wobble.
PhotographyUnsteady hands invented the entire tripod industry.