Low-down and Nefarious

Low-down adjective - Not following or in accordance with standards of honor and decency.

Nefarious and low-down are semantically related. in corrupt topic. In some cases you can use "Nefarious" instead an adjective phrase "Low-down", when it comes to topics like nasty.

Nefarious adjective - Not conforming to a high moral standard; morally unacceptable.

Low-down and nefarious are semantically related. Sometimes you can use "Low-down" instead an adjective "Nefarious".