forbidding

1. ADJ If you describe a person, place, or thing as forbidding, you mean they have a severe, unfriendly, or threatening appearance. 令人生畏的

There was something a little severe and forbidding about her face. 她的臉色嚴厲且令人生畏。

...a huge, forbidding building. ...一幢龐大的、令人歎爲觀止的建築。