Give the synonym for the word Infallible.

Answer: Reliable is the correct synonym for "Infallible".

Key point: "Infallible" means incapable of making mistakes or being wrong.

Why this choice is correct and why the others are not:

• Reliable — means consistently trustworthy or accurate; matches the idea of being unlikely to be wrong, so it is a synonym of "infallible."

• Fashionable — means stylish or in vogue; this concerns appearance/trendiness and is not related to being error-free.

• Successful — means achieving a desired aim or result; this describes outcome, not an inability to make mistakes.

• Clumsy — means awkward in movement or handling things; it does not convey dependability or error-free performance.