Antonyms for the phrase "barely moving" include phrases such as "actively engaged," "fast-paced," and "rapidly advancing." The opposite of slow and sluggish, these antonyms suggest a more dynamic and active state of being, where progress and growth are the norm. Another antonym could be "lively," which connotes an energetic and vibrant quality that is the opposite of being barely moving. Regardless of the antonym used, the phrase "barely moving" implies a lack of momentum, energy, or progress, while its antonyms suggest a more productive, lively, and engaged state of being.