Dictionary definition · worst
noun
- the least favorable outcome"the worst that could happen"
- the greatest damage or wickedness of which one is capable"the invaders did their worst"
- the weakest effort or poorest achievement one is capable of"it was the worst he had ever done on a test"
verb
- defeat thoroughly"He mopped up the floor with his opponents"
adjective
- (superlative of ‘bad’) most wanting in quality or value or condition"the worst player on the team"
adverb
- to the highest degree of inferiority or badness"She suffered worst of all"
Source: Open English WordNet (CC BY 4.0).