What is the meaning of infallible?

The term "infallible" refers to the concept of being incapable of making mistakes or being wrong. Therefore, it means something or someone that is entirely trustworthy and reliable, without any chance of failure or error. This aligns perfectly with the notion of being "free from error" and "absolutely dependable," which is why this choice is the correct definition.

The other options provided focus on different characteristics that do not capture the essence of infallibility. For example, the idea of being sincere and real relates to authenticity, while rashness refers to impulsivity. Fierce and cruel describes demeanor and temperament but does not connect with accuracy or reliability. Thus, the selected answer comprehensively embodies the meaning of infallible.