Dictionary
ver•tig•i•nous
Pronunciation: (vur-tij'u-nus), [key]—
adj.
1. whirling; spinning; rotary:
vertiginous currents of air.
2. affected with vertigo; dizzy.
3. liable or threatening to cause vertigo:
a vertiginous climb.
4. apt to change quickly; unstable:
a vertiginous economy. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.