Definitions

1. adjective

the most contemptibly unscrupulous or immoral

“He’s considered the sleaziest politician in the state’s history.”

2. superlative of sleazy

most characteristic of or resembling something sleazy

“The sleaziest part of town was a haven for crime and corruption.”

3. noun

a person or thing that is the most contemptibly unscrupulous or immoral

“He was the sleaziest of them all, using underhanded tactics to win the election.”