Vertiginous

Prone to cause vertigo.

Heck, I know what ver­ti­go is, but I did­n’t make the con­nec­tion when I saw the word ver­tig­i­nous applied equal­ly to Kandin­sky’s ear­ly paint­ing and Frank Lloyd Wright’s archi­tec­ture. The con­text did­n’t give me quite enough to go on, so I looked it up. And that’s the rule: when I look up a word it goes here.