What are the opposite words for un-stable?

Unstable means not steady or shaky. The antonym for the word "unstable" is "stable," which means firm and steady. A stable object or thing is something that is unlikely to change suddenly or collapse. Antonyms for unstable may include consistent, reliable, predictable, safe, secure or strong. Unstable is used to describe things that are prone to change, while stable refers to things that are reliable or dependable. It is essential to have stable relationships, finances, and health to lead a happy and comfortable life. Therefore, seeking stability in life can help create a sense of calm and contentment.