Definition of "undercurrent" in English

noun

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

2. (figuratively) A tendency of feeling or opinion that is concealed rather than exposed.

   • The meeting was pervaded with an undercurrent of dread, as the managers tried not to admit that firings were looming.

verb

1. (transitive, also figuratively) To flow under some surface.