The word "more dreamboat" could potentially have many antonyms, depending on how it is being used. If we interpret "dreamboat" to mean someone who is attractive or charming, antonyms could include words like unappealing, unattractive, uncharismatic, or repulsive. If we interpret "more dreamboat" to mean someone who is even more attractive or charming than previously thought, antonyms could include words like disappointing, underwhelming, unimpressive, or lackluster. Ultimately, the antonyms for "more dreamboat" will depend on the context and meaning of the phrase, but they will typically be words that describe a lack of appeal, attractiveness, or charisma.