Invert
/ˌɪˈnvɜrt/
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Definition
(verb) To turn (something) upside down or inside out; to place in a contrary order or direction.
Sentence Examples
It might help if you invert the colours.
It might help if you invert the colors.
CEFR Practice Quiz
To perform the experiment correctly, you must ____ the test tube and wait for the gas to rise to the top.