Meaning

noun an inclination contrary to the strongest or prevailing feeling

noun the seaward undercurrent created after waves have broken on the shore

originEtymology tree Proto-Indo-European *h₁én Proto-Indo-European *h₁entér Proto-Indo-European *(H)n̥dʰí Proto-Indo-European *-ér Proto-Indo-European *(H)n̥dʰér Proto-Germanic *under Proto-West Germanic *undar Old English under- Middle English under- English under- English tow English undertow From under- + tow.

Etymology from Wiktionary, CC BY-SA 3.0