to be wet, to be moist, to get dim, to become blurred, to get cloudy, to get muddy, to be bleared, to become tear-choked
潤う【うるおう】
to become moist, to be moistened, to become damp, to get wet, to profit (from), to benefit, to become prosperous, to flourish, to be made rich, to be refreshed (of one's mind), to be enriched (of one's heart)
潤す【うるおす】
to moisten, to wet, to profit, to enrich, to benefit