なおかつ

な

お

か

つ

Meanings

usually written using kana alone

Adds an additional point or reason, often strengthening the preceding statement. Used in both spoken and written Japanese.

usually written using kana alone

Introduces a contrasting point that does not negate the previous statement. Often used to acknowledge a fact while adding a counterpoint.

〈形けい容よう詞し〉、なおかつ〈形けい容よう詞し〉…and moreover…; describing two qualities that both hold true
このレストランは安やすくて、なおかつ美味おいしい。
This restaurant is cheap, and on top of that, delicious.
〈事こと〉、なおかつ〈事こと〉acknowledging one fact while adding a contrasting or reinforcing point
彼かれは忙いそがしいが、なおかつ毎まい日にち運うん動どうを続つづけている。
He's busy, and yet he still keeps exercising every day.

さらにN3sense 1
さらに is a very common, neutral word for adding something further, while なおかつ is more formal and often stresses that the added point reinforces or contrasts with what was just said.
その上うえN3sense 1
その上 is a slightly casual, everyday way to say 'on top of that', whereas なおかつ carries a more formal or emphatic tone.

なおさらN2
尚更 (なおさら) means 'all the more' and is often confused with なおかつ because of their similar sound and shared 尚 kanji, but 尚更 intensifies a degree while なおかつ adds a separate point.

なおかつUsage92%
Kana spelling is standard; the word is usually written in kana.
尚なお且かつUsage8%
Kanji form is rare and mostly seen in formal or literary writing.
尚なおかつUsage<1%
search-only kanji form
Search-only kanji form; not a standard spelling.

Compound of なお (still, furthermore) and かつ (moreover, besides). The kanji spellings are ateji and rarely used.