Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun libeler
1 sense of libeler
Sense 1
defamer, maligner, slanderer, vilifier, libeler, backbiter, traducer -- (one who attacks the reputation of another by slander or libel)
=> detractor, disparager, depreciator, knocker -- (one who disparages or belittles the worth of something)