plausible

【原文】
As a general rule, Ms. Robins and her team research complaints to make sure they are plausible but don't argue with a customer about details. "Perception is reality," she said.

【単語の意味（英語）】
reasonable and likely to be true
good at sounding honest and sincere, especially when trying to trick people

【単語の意味（日本語）】
（主張・言い訳などが）妥当な、納得のいく；口先のうまい