call a spade a spade
US /kɔːl ə speɪd ə speɪd/
UK /kɔːl ə speɪd ə speɪd/

1.
直言不讳, 实话实说
to speak frankly and directly, even if it's blunt or impolite
:
•
Let's just call a spade a spade; he's clearly lying.
我们还是直言不讳吧;他显然在撒谎。
•
She's known for always calling a spade a spade, no matter how uncomfortable the truth.
她总是直言不讳,无论真相多么令人不适。