Overturning is defined as the act of flipping or turning something completely over. Its antonyms, on the other hand, include words that describe the opposite action or state. These include words such as upright, erect, standing, stable, and fixed. While overturning may connote movement and quick action, its antonyms convey a sense of stability and permanence. Additionally, antonyms for overturning can also include words that describe the prevention or avoidance of such action, such as steady, secure, and immovable. Overall, understanding these antonyms can help to provide a diverse set of language options and to convey different meanings when speaking or writing.