nura-nura
An unpleasant, slippery-looking shine — oil floating on water, a slug trail catching the light, or a sweaty, greasy surface. Carries a strongly negative, almost creepy impression.
💡Noticing an oil spill on a puddle — 'The puddle was gleaming nura-nura with rainbow-colored oil.'
水たまりに油がぬらぬら光っていた。
Oil was gleaming nura-nura on the puddle.
The surface of the stagnant water shimmered ___ with an oily film.
よどんだ水面が油膜で○○光っていた。