Shirabe
不確実

不確実ふかくじつ

Common I-adj Noun
English jmdict
1
adjectival nouns or quasi-adjectives (keiyodoshi)noun (common) (futsuumeishi) uncertain;unreliable;inauthentic;insecure
ネット上の不確実な情報を鵜呑みにしてはならない。
You mustn't swallow unreliable information that's on the Web.

確実かくじつ

Common I-adj Noun
English jmdict
1
adjectival nouns or quasi-adjectives (keiyodoshi)noun (common) (futsuumeishi) certain;sure;definite;reliable;sound;solid;safe;secure
これは遅いけど確実な方法だ。
This is a slow but certain way.