Antonyms for the phrase "brought screeching halt" would include words and phrases such as "gradual slowdown," "ease into a stop," "gentle deceleration," "smooth transition," and "slow the pace." These phrases offer a softer, more controlled way of stopping or slowing down, rather than the sudden and jarring effect of screeching to a halt. Other antonyms may include terms such as "slow and steady," "gradual progression," "slight decrease," or "gentle cessation." By using these alternative phrases, writers can convey a more measured and gradual change of pace, rather than a sudden and abrupt stop.