The antonyms for the word "thrown balance" are stability, equilibrium, steadiness, poise, and composure. Stability refers to a state of being steadfast, firm, or unyielding. Equilibrium entails balance, harmony, and symmetry in all aspects of life. Steadiness suggests a firmness and constancy of character or temperament. Poise describes the grace and elegance of movement or posture. Composure refers to a state of calm and tranquility, even in the face of adversity. These antonyms all convey a sense of order, control, and calmness that are lacking in "thrown balance," which implies a loss of control or stability.