Final answer:
A plausible excuse seems true, suggesting that it has a superficial appearance of credibility, even if there isn't evidence to confirm its truthfulness.
Step-by-step explanation:
A plausible excuse is one that seems true, but that does not necessarily mean it is certainly true. The word 'plausible' implies that the excuse could be believed or accepted but does not guarantee its truthfulness.
It is essential to differentiate between plausibility and truth; the former focuses on the superficial appearance of credibility while the latter involves the actual state of facts. For instance, saying 'I was late because my car broke down' is a plausible excuse, but without evidence, we cannot be sure if it is certainly true.
A plausible excuse is one that is probably true or appears true. It is an explanation or justification that is believable and reasonable based on the information available. However, it may not necessarily be confirmed as true.