The antonyms of the phrase "continued ahead" can be either "halted" or "reversed". When one halts, they pause or stop in their progress, while reversing means moving backward or retreating. Other antonyms include "turned back" or "backtracked", which indicate a change in direction from the original path. Additionally, "diverged" or "deviated" can be antonyms, suggesting a departure from the intended path or route. Contrary to "continued ahead," these antonyms imply a different outcome or result from the initial plan, highlighting the importance of considering various options and alternatives in decision-making.