Ultimating is a verb that refers to the process of reaching the end or final stage of something. It is often used to describe the culmination of a project or the achievement of a goal. Antonyms for ultimating would be words that describe the opposite of reaching a final stage or endpoint. These could include terms like "beginning," "starting," "initiating," "commencing," or "launching." These words describe the earlier stages of a project or goal, rather than the final closing stages. While ultimating implies closure and finality, its antonyms point to the opening and beginning of a new project or journey.