— vertiginously , adv. — vertiginousness , n.
/veuhr tij"euh neuhs/ , 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.
[ 1600-10; vertiginosus dizzy, equiv. to vertigin- (s. of vertigo ) VERTIGO + -osus -OUS ]