The term "more blithering" typically refers to someone who is babbling on about nonsense or speaking incoherently due to being overly excited or nervous. Synonyms for this phrase could include "rambling," "jabbering," "prattling," "babbling," "chattering," "nattering," or "yammering." Other options might include "gibbering," "driveling," "blabbering," or "gushing." Each of these words indicates a lack of focus or clarity in communication and suggests a speaker who is struggling to articulate their thoughts effectively. When choosing a synonym for "more blithering," it is important to consider the specific context and tone of the communication to find the best fit.