difficult to ..., hard to ...
Verb ます stem +
An auxiliary adjective used to express that performing a specific action is extremely difficult, or feels virtually impossible, due to psychological or emotional barriers, or the nature of the situation.
Attach
その話は信じ
That story is hard to believe.
これは忘れ
This is an unforgettable memory.
この状況は受け入れ
It is difficult to accept this situation.
This grammar point is primarily used in formal or written contexts. It focuses on the speaker's feeling that something is 'hard to do' or 'cannot be done' rather than a physical inability. It is commonly used with verbs related to mental processes like believing, understanding, or forgiving.