Third-person singular simple present indicative form of sulk.(verb)
Wiktionary.org : Text is available under the Creative Commons Attribution-ShareAlike License
Use "sulks" in a sentence
"He saddled Keno, and rode away in that silent preoccupation which the boys called the sulks for want of a better understanding of it."
"To begin with, the _predicant_ was sulky because I had cut him short in his address, and a holy man in the sulks is a bad kind of animal to deal with."
"To be sure, he has a good temper; and I must say for him he never goes into the sulks, which is a comfort, for of all things in the world sulking is the most childish and contemptible."