undercurrent

IPA: ˈʌndɝkɝʌnt

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.

Examples of "undercurrent" in Sentences

The peaceful surface of the lake belied the dangerous undercurrent swirling beneath
There was an unsettling undercurrent of tension in the room, despite the jovial atmosphere
As they spoke, she couldn't help but detect an undercurrent of sadness in his voice
The undercurrent of fear in the community grew stronger as rumors of a prowling predator spread
Despite the outward calm, there was a palpable undercurrent of excitement as the countdown to the event began