drunk
Betrunken is the German word for drunk. It is an adjective used to describe someone who is under the influence of alcohol. For example, 'Er ist betrunken' means 'He is drunk'.
He came home drunk.
This phrase uses the word 'betrunken' to describe the state of the person. In this context, 'betrunken' is used as an adjective to describe the state of the person when they came home.
We were not drunk, we only had a few beers.
In this sentence, 'betrunken' is used in the negative form to deny the state of being drunk. Despite having had a few beers, the speakers claim they were not 'betrunken'.
She runs like a drunk person.
In this case, 'Betrunkene' is the innate noun form of 'betrunken' and signifies a drunk person. It is used here to compare the way the person is running to how a drunk person might run.