Meaning of OPAQUE in English
1 not clear enough to see through
▪ be , look
As the lens becomes more ~, the patient notices a falling off in vision.
These crystals are completely ~ and nearly black.
▪ almost , nearly
▪ slightly , somewhat
The glasses looked slightly ~.
The windows were nearly ~ with grime.
2 difficult to understand
▪ extremely , fairly , very , etc.
Both question and answer are rather ~.
The complex administrative arrangements mean that the decision-making process remains somewhat ~.
The system is completely ~ to non-specialists.
▪ a little , slightly , etc.
Opaque is used with these nouns: ↑ glass , ↑ tights
Oxford Collocations English Dictionary. Оксфордский английский словарь словосочетаний . 2012