worst

nouns

the least favorable outcome
"the worst that could happen"
is a type of (narrower)
something that results
"he listened for the results on the radio"
the greatest damage or wickedness of which one is capable
"the invaders did their worst"; "so pure of heart that his worst is another man's best"
is a type of (narrower)
the quality of being morally wrong in principle or practice
"attempts to explain the origin of evil in the world"
the weakest effort or poorest achievement one is capable of
"it was the worst he had ever done on a test"
antonym
is a type of (narrower)
earnest and conscientious activity intended to do or accomplish something
"made an effort to cover all the reading material"; "wished him luck in his endeavor"; "she gave it a good try"

verbs

defeat thoroughly
"He mopped up the floor with his opponents"

adjectives

(superlative of `bad') most wanting in quality or value or condition
"the worst player on the team"; "the worst weather of the year"
antonym
is similar to
the lowest rank
"bottom member of the class"
is similar to
lowest in rank or importance
"last prize"; "in last place"
is similar to
of an organism's environment; least favorable for survival
domain usage
an exaggerated expression (usually of praise)
"the critics lavished superlatives on it"
see also
having undesirable or negative qualities
"a bad report card"; "his sloppy appearance made a bad impression"; "a bad little boy"; "clothes in bad shape"; "a bad cut"; "bad luck"; "the news was very bad"; "the reviews were bad"; "the pay is bad"; "it was a bad light for reading"; "the movie was a bad choice"
see also
of low or inferior quality

adverbs

to the highest degree of inferiority or badness
"She suffered worst of all"; "schools were the worst hit by government spending cuts"; "the worst dressed person present"