"Running circles around" is a phrase used to describe someone performing a task effortlessly and with great skill. Its antonyms could be "struggling," "faltering," "stumbling," "failing," "straining," or "floundering." These terms imply an inability to accomplish tasks smoothly and indicate a lack of proficiency. Additionally, "running circles around" could be replaced with words like "equal footing," "tied," or "evenly matched" to suggest that both parties are equally competent. These antonyms bring to light the importance of development and growth, as it is essential in ensuring that we become proficient at executing tasks with ease.