凝乎と[jitto] motionlessly
確乎[kakko] firm
乎己止点[okototen] marks to aid in reading Chinese classics
断乎[danko] firm
嗟乎[aa] Ah!

天爾乎波[teniwoha] postpositions
断断乎[dandanko] firm
牢乎[rouko] firm
醇乎[junko] pure
確乎不抜[kakkofubatsu] determined

確かに[tashikani] surely
確かめる[tashikameru] to ascertain
確言[kakugen] assertion
確乎[kakko] firm
確執[kakushitsu] discord

確実[kakujitsu] certainty
確実性[kakujitsusei] certainty
確実度[kakujitsudo] certainty
確証[kakushou] positive proof
確信[kakushin] conviction