01 n. A current below the surface of water, sometimes flowing in a contrary direction to that on the surface.
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1.
A current below the surface of water, sometimes flowing in a contrary direction to that on the surface.
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2.
Hence, figuratively, a tendency of feeling, opinion, or the like, in a direction contrary to what is publicly shown; an unseen influence or tendency; as, a strong undercurrent of sentiment in favor of a prisoner.“All the while there was a busy undercurrent in her.” — G. Eliot.