The term "more farstretched" implies something that is more extreme or exaggerated than what is typical or expected. Synonyms for this phrase include "far-fetched," "implausible," "unbelievable," "unconvincing," and "unlikely." Other alternatives might include "exaggerated," "overblown," "hyperbolic," "speculative," or "fantastical." Each of these terms may be appropriate depending on the context in which the phrase is being used, as well as the tone and purpose of the message. For example, "fantastical" might be more appropriate in a work of fiction, while "unconvincing" might be better suited to a critique of a poorly-written argument.