The word "more unstirring" implies a lack of movement or activity. In opposition, antonyms for this phrase could include words such as lively, dynamic, active, energetic, or animated. These words suggest movement, motion, and excitement. For example, using antonyms to describe a bustling city street might evoke images of crowds, noise, and liveliness. Alternatively, using antonyms to describe a peaceful countryside scene might highlight gentle movements such as swaying trees or babbling brooks. Whether describing an object, place, or person, using antonyms for "more unstirring" can help to bring a sense of contrast and depth to your writing.