worst
adjective
°Most inferior; doing the least good.
"I think putting oil on a burn is the worst thing you can do."
°Most unfavorable.
"That's the worst news I've had all day."
noun
°(with the) ­Something that is worst.
"None of these photographs of me are good, but this one is definitely the worst."
verb
°In the worst way; most badly.
"My sore leg hurts worst when it's cold and rainy."
°Most ill.