unkind; unfriendly; inconsiderate
Describes a person, action, or attitude that lacks kindness or thoughtfulness. Often used for failing to help or being cold.
He took an unkind attitude toward the person in trouble.
あの店員は不親切で、何も教えてくれなかった。
That clerk was unfriendly and didn't tell me anything.
That store clerk was unhelpful to the first-time customer.
I made an inquiry but was disappointed by their unhelpful response.
Because of the manual's unhelpful explanation, I couldn't figure out how to use it.