The term "catching off-balance" implies an unexpected or surprising action that throws someone off their game. Antonyms for this phrase might include "predictable," "stable," "balanced," "consistent," or "controlled." These words suggest a sense of calm and order, where individuals have a solid foundation to rely upon and are not easily taken aback. Additionally, one could consider "steadfast," "poised," "grounded," "resilient," or "unflappable" as antonyms for "catching off-balance," each of which communicates a sense of inner strength and resilience in the face of unexpected challenges. Ultimately, these antonyms provide a counterpoint to the idea of being caught off-balance, offering a sense of stability and control in the face of uncertainty.