worst

1 worst /ˈwɚst/ adjective
1 worst
/ˈwɚst/
adjective
Britannica Dictionary definition of WORST
superlative form of 1bad
1 
a  : worse than all others
b  : least skillful, talented, or successful
2 
: least appropriate, useful, or helpful

in the worst way

US, informal

worst of all

— used to refer to the least pleasant or appealing part of something that has many bad parts

your own worst enemy

— see enemy
2 worst /ˈwɚst/ adverb
2 worst
/ˈwɚst/
adverb
Britannica Dictionary definition of WORST
superlative form of badly
: in the worst way : in a way that is worse than all others
3 worst /ˈwɚst/ noun
3 worst
/ˈwɚst/
noun
Britannica Dictionary definition of WORST
1 
the worst : the worst person or thing
: the worst group of people or things
: the worst part of something
2 
[singular] : someone's or something's least effective or pleasant condition : someone's or something's worst condition — used in phrases like at your worst and at its worst

at worst

— used to refer to a result, condition, etc., that is the worst one possible

bring out the worst in

◊ If someone or something brings out the worst in you, that person or thing causes you to use or show your worst qualities.

get the worst of it

: to lose a fight, argument, battle, etc.

if (the) worst comes to (the) worst

or if (the) worse comes to (the) worst also if worse comes to worse
: if the worst possible thing happens