раздражающий(неверно, см. пример: While one might think having a second witness to the weird object would provide some level of reassurance, Reyes mused that "it was a little more nerve-wracking that someone also saw what I saw." (coasttocoastam.com) ART Vancouver)
нервотрёпка(also nerve-racking – A nerve-racking situation or experience makes you feel very tense and worried • They spent a nerve-racking day waiting.collinsdictionary.com • It was more nerve-wracking than taking a World Cup penalty. • My wedding was the most nerve-racking thing I've ever experienced.Tanya Gesse)