The word "most blubbering" refers to someone who is excessively tearful, emotional, and weepy. The antonyms for this word would be those that convey composure, calmness, and self-control. Some of the antonyms for this word could be stoic, phlegmatic, unemotional, detached, and composed. These words describe a person who is able to control their emotions and remain calm in the face of difficult situations. They are not easily moved to tears or anger and can handle stress and pressure with ease. By using these antonyms, we can convey a sense of strength, resilience, and maturity, which are all qualities that many people aspire to have in their lives.