This is the 5931st most frequent Japanese word.
やましい
Feeling guilt or having a guilty conscience.
Here, 'やましい' is used to imply a sense of guilt or suspiciousness in the context of behavior.
彼の言動には何かやましいものを感じる。
I feel something guilty in his behavior.
In this instance, 'やましい' refers to the guilt associated with holding a secret or something untrustworthy.
彼女はやましい秘密を抱えているようだ。
She seems to have a guilty secret.
Here, 'やましい' is utilized in the context of indicating the absence of guilt or dishonesty.