The phrase "more speculating" can be interchangeably used with several other words or phrases that convey a similar meaning. "Further conjecture," "deeper reflection," "continued hypothesis," and "additional supposition" are all viable synonyms for the phrase. Another option could be "increased theorizing," or "heightened speculation." These synonyms all imply a process of thinking and reasoning through a particular idea or situation. Someone who is engaging in more speculating is likely attempting to gain a greater understanding of something, whether it be a social issue or a scientific theory. Whatever the specific context, these synonyms can be used to add variety and nuance to one's writing or speech.