Word

確か

確、慥か
たしか
sure; certain; positive; definite; reliable; trustworthy; safe; sound; firm; accurate; correct; exact; If I'm not mistaken; If I remember correctly; If I remember rightly
Word

確かに

慥かに
adv
たしかに
surely; certainly
Word

確かめる

慥かめる
v1
vt
たしかめる
to ascertain; to check; to make sure