Color, light and opaque

opaque
(adj)
o-PAKE
Meaning

not transparent; not capable of being seen through or into

1st Sample Sentence

You can see to the bottom of a small lake, but the waters of the ocean are opaque.

Root

opacus (shaded, in the shade, shady, dark, darkened, obscure) (Latin)

Synonyms

nebulous, opaque, turbid

Antonyms

diaphanous, limpid

Mnemonics

OP (opposite) and AQUE (aqua)-- opposite of water -- means not transparent. The OPening wAs QUEstionable because no light was coming through. Therefore, it was OPAQUE.

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