down and dirty

Từ điển Oxford Advanced Learner 8th

ˌdown and ˈdirty idiom
(NAmE, informal)
1. behaving in an unfair or aggressive way, especially because you want to win
•The candidate again got down and dirty with his rival.
•The online campaign was getting down and dirty.
2. rude and shocking
•The singer got down and dirty at the club last night and made headlines again.
•The singers are a down-and-dirty duo from Ohio.
Main entry: ↑dirty_idiom