257 - Opaque

1. (of glass, liquid, etc.)       not clear enough to see through or allow light through                                                                                   (Oxford)

2. (of speech or writing)      difficult to understand; not clear  (Oxford)

3. preventing light from travelling through, and therefore not transparent or translucent                                                    (Cambridge)

4. Opaque writing or speech is difficult to understand           (Cambridge) 

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