Intestability is a word that refers to the quality of being unable to be subdued or defeated, especially in an argument or debate. There are several synonyms for this word that can be used to convey the same meaning. Some of the most common synonyms for intestability are immovability, unyieldingness, obduracy, firmness, steadfastness, and resoluteness. Each of these words implies a sense of strength and determination that cannot be easily overcome, and they are often used to describe people or things that exhibit a high degree of perseverance and resilience. Whether you are discussing a philosophical concept or a personal quality, there are many different ways to express the idea of intestability with precision and clarity.