لَئِيمٌ خَسِيسٌ
A mean, base person.
A speaker may utter these descriptions with a particular person in mind while suppressing the name. Context can identify the intended target, yet the speaker has not explicitly named that person and can later attempt to deny the reference.
The description is rhetorical, not a moral endorsement of such evasiveness. The analytical point is how lack of explicit identification leaves deniability. Indirect disparagement and omission of a proper name are related but distinct.