The term "poison pens" refers to writing or comments that are intended to harm or offend someone. There are several synonyms for this phrase, including "vitriolic words," "malicious writing," "venomous language," "toxic texts," and "bitter prose." All of these terms convey the idea that the writer is expressing negative and damaging opinions or accusations, often aimed at discrediting someone or tearing them down. Whether in personal correspondence, social media posts, or public statements, poison pens can be hurtful and damaging, and it's important to think carefully before putting words on paper or screen.