不ふ確かく実じつ性せいMeaningsNoun1. uncertainty; indeterminacy; unreliability; unauthenticityKanji used不negative確certain実real性nature (of a person)Composed of不ふ確かく実じつuncertain; unreliable; inauthentic; insecureNa-adjective性せいnature (of a person); sex; gender; sex (i.e. sexual attraction, activity, etc.); -ty; -ity; -ness; -cyNoun