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