Pronunciation: (un'dur-kûr"unt, -kur"-), [key]
1. a tendency underlying or at variance with the obvious or superficial significance of words, actions, etc.: Even in his friendliest remarks, one could sense an undercurrent of hostility.
2. a current, as of air or water, that flows below the upper currents or surface.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.