Synonyms of undercurrent

1 Syllable
hint, tide, trend
2 Syllables
whirlpool, eddy, tinge, tenor, feeling, aura, vibes, whirlpools, flavor, murmur, sense, trace
3 Syllables
riptide, underflow, suggestion, vibrations, undertow, tendency, crosscurrent, direction
4 Syllables
overtone, intimation, inclination, insinuation, propensity, indication, undertone, atmosphere