Adverb
(chiefly US and Canada, idiomatic) Urgently; desperately; to an extreme degree.
I need a drink of water in the worst way.
Used other than figuratively or idiomatically: see in, the, worst, way.
Source: en.wiktionary.orgWhen one has finished building one's house, one suddenly realizes that in the process one has learned something that one really needed to know in the worst way - before one began. Friedrich Nietzsche
I wanted to get out of Mississippi in the worst way. Go back? What I want to go back for? Muddy Waters
At the age of 25 most people were finished. A whole god-damned nation of assholes driving automobiles, eating, having babies, doing everything in the worst way possible, like voting for the presidential candidate who reminded them most of themselves. Charles Bukowski
Once I decide to do something, I want to win in the worst way. I will do anything within the law to win. Theodore J. Forstmann
All this may sound touchy-feely in the worst way, but Jonze is trying to get at how we seek romantic connection in this brave (or not so brave) new world. Source: Internet
Crushing on grapefruit Perrier in the worst way. Source: Internet