undercurrent

IPA(Pronunciation)

/ˈʌndəkʌɹ(ə)nt/

Noun

figuratively

A current of water which flows under the surface, and often in a different direction from surface currents. / (figuratively) A tendency of feeling or opinion that is concealed rather than exposed.

Japanese Meaning

水面下を流れる水流、または（比喩的に）表に現れずに潜む感情や意見の傾向

What is this buttons?

While the surface looked calm, an undercurrent pulled debris toward the rocks, surprising the sailors.

Google Translation / DeepL Translation

表面は穏やかに見えたが、底流が漂流物を岩に引き寄せ、船乗りたちを驚かせた。

Details

Sense（1）

A current of water which flows under the surface, and often in a different direction from surface currents.

For that an undercurrent (which ſome have beleived,) in the ſtraights-mouth, will not ſolve this difficulty, unleſs occaſioned by a vaſt Gulf that muſt be placed ſomewhere in the Atlantic near the Mouth of the ſtraight, which though overflown and hidden by that mighty ſea, yet may poſſibly abſorb the deeper waters, and ſo cauſe a contrary undercurrent.

Google Translation / DeepL Translation