French-English translations for opaque

cloudy
us
a cloudy infrastructure
opaqueWater has always been rather opaque. L'eau a toujours été plutôt opaque. Europe is too secretive and too opaque. L’Europe fait trop de mystères et est trop opaque. As ever, North Korea's motives are very opaque. Comme toujours, les motifs de la Corée du Nord sont très opaques.

thick
us
I want some planks that are two inches thickHe had such a thick neck that he had to turn his body to look to the sideWe walked through thick undergrowth