上に【うえに】

The grammar pattern 上に (うえに) is used to express that something is in addition to or on top of something else. It conveys the meaning of "not only… but also," "besides," or "moreover." It is used to stack information – adding a second point that goes in the same direction as the first (both positive or both negative).

Structure

上に connects to the preceding clause as follows:

• Verb (plain form)
  • 上に:
    かれ彼はしごと仕事ができるうえ上に、せいかく性格もいい。

    He is good at his job, and on top of that, he has a great personality.
• い-adjective
  • 上に:
    このへや部屋はせまい狭いうえ上に、くらい暗い。

    This room is small, and on top of that, dark.
• な-adjective + な
  • 上に:
    このまち街はしずか静かなうえ上に、こうつう交通もべんり便利だ。

    This town is quiet, and in addition, transportation is convenient.
• Noun + の / である
  • 上に:
    かれ彼はいしゃ医者であるうえ上に、さっか作家でもある。

    He is a doctor, and on top of that, a writer as well.

Key nuance: same direction

An important characteristic of 上に is that both clauses should point in the same direction – either both positive or both negative. It is used to emphasize that one quality piles on top of another.

Positive stacking:

Negative stacking:

You would not typically use 上に to connect a positive and a negative statement – for that, のに or けど would be more natural.

Comparison with し

While し can also list reasons or qualities, 上に carries a stronger sense of accumulation and feels more formal or emphatic. し is more conversational and can list reasons more loosely, whereas 上に emphasizes that one thing is layered on top of another.