What is Herman worst novel?

It's impossible to definitively say which of Herman Melville's novels is "worst" as it's a matter of subjective taste and critical interpretation. Different readers will appreciate different works, and there are varying opinions on the relative merits of his novels.

However, some novels are generally considered less successful or popular than others, including:

* "Pierre; or, The Ambiguities" (1852): Often seen as a melodramatic and overly complex work, with a convoluted plot and difficult themes.

* "Israel Potter: His Fifty Years of Exile" (1855): A historical novel that is considered less engaging than Melville's more famous works.

* "The Confidence-Man: His Masquerade" (1857): A challenging and often confusing novel with a fragmented narrative and ambiguous characters.

It's worth noting that even these less-celebrated works can offer insights into Melville's writing style and the complexities of human nature. Ultimately, the best way to decide which of Melville's novels is your least favorite is to read them yourself and form your own opinion.