To be vertiginous is to be dizzy and woozy. It's a disorienting feeling.

There's a famous movie called "Vertigo," which is named after a condition of extreme dizziness, often caused by heights. The word vertiginous applies to similar feelings and sensations. The flu makes many people feel vertiginous. Sometimes when you stand up too fast, you can get vertiginous for a second, and most people feel vertiginous after spinning in a circle. Vertigo is a Latin word that originally meant "whirling or spinning," from its root vertere, "to turn."

Definitions of vertiginous
  1. adjective
    having or causing a whirling sensation; liable to falling
    “a vertiginous climb up the face of the cliff”
    synonyms: dizzy, giddy, woozy
    ill, sick
    affected by an impairment of normal physical or mental function
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