ひょえー

interjection

whoa!

Colloquial exclamation of surprise, shock, or being startled. Often used in casual conversation or manga.

• ひょえー、こんなに高たかいの！？

  Whoa, it's this expensive!?

• 急きゅうに後うしろから声こえをかけられて、「ひょえー」と叫さけんでしまった。

  Someone suddenly called out from behind me, and I let out a "whoa!"