Having bluffed his way in without paying, he could not plausibly demand his money back.
他没花钱就蒙混了进来,没道理再要求退钱。
plausibility
...the plausibility of the theory.
该理论的貌似合理性
2ADJ-GRADED (人)貌似可信的,花言巧语的 If you say that someone is plausible, you mean that they seem to be telling the truth and to be sincere and honest. (人)貌似可信的,花言巧语的