The phrase "bring a screeching halt" means to abruptly stop or halt something with a loud and unpleasant sound. The antonyms for this phrase would be to slowly and smoothly continue, advance, or progress forward. Some possible antonyms could include words like "proceed," "continue," "flow," "advance," "run smoothly," or "move steadily." These words convey a sense of calm and fluidity, indicating that the activity or event in question is happening without interruption or disturbance. Antonyms like these can provide a useful contrast to "bring a screeching halt," helping to emphasize the suddenness and jarring nature of such a stop.