Feeling dizzy, unsteady, or slightly faint; having trouble keeping your balance.
Origin uncertain, possibly from Scottish or dialectal roots, gaining popularity in American English by the early 1900s. The word's playful sound fits its meaning of lightheadedness and confusion.
No one's entirely sure where 'woozy' came from—it might be Scottish, it might be made-up sound-matching—but that mystery makes it perfectly fit how woozy-ness feels: confused and hard to pin down!
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