ふむ

hmm

ɸ ɯ̟ m ɯ̟
interjection Rare #35,240
hmm Used to show that you are thinking, considering something, or acknowledging what someone said.
JA: ふむ、それは面白い考えですね。
EN: Hmm, that's an interesting idea.

ふむ本当か

Hmm, really?

— スター・トレックII カーンの逆襲 (1982)

ふむふむ

Hmm, I see.

— 教皇選挙 (2024)

ふむ

Hmm.

— 七人の侍 (1954)

ふむ

Hmm.

— 教皇選挙 (2024)

Sounds similar to