なくはない

expression

not without; it's not that ...; slightly; somewhat

Used to acknowledge that something exists or is true to a limited degree, often as a hesitant or partial admission. Common in patterns like ～なくはない or ～ないことはない.

• 彼かれの言いうことも、わからなくはない。

  I can understand what he says to some extent.

• その話はなし、信しんじられなくはないけど、ちょっと怪あやしいね。

  It's not that I can't believe that story, but it's a bit suspicious.