二人きりで

with just the two of us

→ 2人
phrase Rare #31,468
with just the two of us Emphasizes being together with only one other person, with no one else present.
JA: 二人きりでゆっくり話したいです。
EN: I want to talk with just the two of us, at our own pace.

二人きりで話をしてもいいですか。

May I speak with you privately?

彼に先導され、扉を閉めて二人きりで話した。

He led me inside, and we closed the door so we could talk alone.

トムと二人きりで話をしたいのですが。

I’d like to speak with Tom alone.

当分二人きりでここに住むのだからな

We’ll be living here alone together for a while, after all.

— 天空の城ラピュタ (1986)

シータと二人きりで話がしたい

I want to talk to Theta privately.

— 天空の城ラピュタ (1986)