rotten

1 rotten /ˈrɑːtn̩/ adjective
1 rotten
/ˈrɑːtn̩/
adjective
Britannica Dictionary definition of ROTTEN
[more rotten; most rotten]
1 
: having rotted or decayed and no longer able to be used, eaten, etc.
— sometimes used figuratively
2 
informal
a  : very bad or unpleasant
b  not used before a noun : not well or healthy
c  not used before a noun : not happy or pleased
d  : not morally good : not honest, kind, etc.
— see also rotten apple at apple
3 
always used before a noun, informal — used for emphasis when you are angry

— rottenness

/ˈrɑːtn̩nəs/ noun [noncount]
2 rotten /ˈrɑːtn̩/ adverb
2 rotten
/ˈrɑːtn̩/
adverb
Britannica Dictionary definition of ROTTEN
informal
2 
: very much