adverb (fukushi)creo que;si no me equivoco;si mal no recuerdo;seguramente;probablemente;cierto;seguro;definido;si no estoy equivocado;si recuerdo correctamente
Englishjmdict
1
adjectival nouns or quasi-adjectives (keiyodoshi)sure;certain;positive;definite
彼が間違っているのは確かです。
It is certain that he is wrong.
2
adjectival nouns or quasi-adjectives (keiyodoshi)reliable;trustworthy;safe;sound;firm;accurate;correct;exact
私はそのニュースを確かな筋から得た。
I got the news from a reliable source.
3
adverb (fukushi)If I'm not mistaken;If I remember correctly;If I remember rightly
これは確か淡水魚だと思います。
I believe this fish is a freshwater fish.
Other forms
確 【たしか】 (irregular okurigana usage) · 慥か 【たしか】 (rarely used kanji form)