～なくはない (〜naku wa nai)
Explanation
Expresses the idea 'it's not that it's impossible' or 'it's not that I can't'.
Formation
Verb-ないform + なくはない, い-Adjective－い + くはない, な-Adjective + ではなくはない, Noun + ではなくはない
Detailed Explanation
The ～なくはない grammar point implies that while something may not be your first choice or not guaranteed, it's not outright impossible. Translates to 'It's not that it's impossible,' 'It's not that I don't/can't ~.'
Examples
それを終えるのは難しくなくはない。
Sore o oeru no wa muzukashiku naku wa nai.
It's not that it's impossible to finish it.
彼に話すのは怖くなくはない。
Kare ni hanasu no wa kowaku naku wa nai.
It's not that I'm entirely unafraid to talk to him.
映画を見に行く時間がなくはない。
Eiga o mi ni iku jikan ga naku wa nai.
It's not that I don't have time to go see a movie.
日本語で講演するのは難しくなくはない。
Nihongo de kouen suru no wa muzukashiku naku wa nai.
It's not impossible to give a lecture in Japanese, but it won't be easy.
Grammar content sourced from hanabira.org.