Dictionary / Vocabulary / 後ろ暗い
うしろぐらい
shady; underhanded; questionable
Also written 後ろぐらい、うしろ暗い
俺は締め出されてるんだぞ？後ろ暗いことがあるに決まってる。
I was locked out! There's got to be something fishy going on.