개연성이 · 개연성을
probability, likelihood; plausibility (of a story)
Example
이 드라마는 이야기의 개연성이 너무 떨어져요.
This drama's story is really implausible.
Word parts
개 probably+연 so, thus+성 quality
Literally 'the quality of probably being so'.
Good to know
Viewers often complain 개연성이 없다 when a plot twist makes no sense.
Related words