The word "in-firmer" means unsteady or uncertain. Its antonyms include stable, secure, firm, strong, unshakable, and confident. When someone is firm, they have a clear belief or position about something and are not easily swayed. They have confidence in their decisions and actions. Stability also indicates a sense of security and certainty, indicating a safe and predictable environment. Strong suggests physical or emotional fortitude, while unshakable implies unwavering conviction. A person who is secure is protected and safe, and they can handle tough situations calmly. All these antonyms for "in-firmer" indicate confidence and steadiness, which are critical qualities to possess in navigating life's challenges.