hairy

児童の読み物 "The Witches" に出てくる簡単そうな単語でも意味がちょっと分かりません。
"I nipped out when the ancient witches were coming in," I told her. "It was all a bit hairy, Grandmamma. I wouldn't want to do it again."
この "hairy"　は「毛深い」ではないでしょう。
OneLook Quick Definitions: hazardous and frightening
Cambridge Advanced Learner's English Dictionary: frightening or dangerous, especially in a way that is exciting: I like going on the back of Laurent's motorbike, though it can get a bit hairy.
日本語の「身の毛もよだつ」を思い起こしますね。