The phrase "tossed turn" has various antonyms depending on the context. Some plausible antonyms include smooth, steady, fixed, and stable. Smooth can be used as an antonym when referring to the absence of sudden and jerky movements, while steady refers to consistency and regularity. Fixed, on the other hand, can mean immovable, constant or unchangeable. Stable means to be firmly rooted and unmovable. These antonyms can be applied in different scenarios, like navigating a winding mountain road, sailing a boat through choppy waters, or walking on rough, uneven terrain. In conclusion, the antonyms of "tossed turn " help to convey a sense of stability, certainty, and smoothness.