What are the opposite words for unstable?

Unstable can be defined as something that is liable to change or prone to collapse. The antonyms for the word unstable can be steady, stable, secure, firm, fixed or safe. Stability is essentially the opposite of instability. Being steady or secure indicates that something is not easily influenced or changed and is firmly established. Firm and fixed are words that imply something is steadfast and immovable. In comparison to unstable, being safe makes a person or object secure and protected from harm or danger. Antonyms to the word unstable suggest something that is strong, dependable and reliable.

Antonym of the day

hand picks
grow, ignore, plant.