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blue
UK
/bluː/
US
/blu/
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AI Expert
Compare the meanings of “blue” as a color and as an emotion.
Learn when to say “feel blue” and why “feel a deep blue” sounds unnatural.
Explore common expressions with “blue,” such as “once in a blue moon.”
Compare “blue,” “sad,” and “depressed” in meaning and usage.
Learn how “the blues” refers to both sadness and a style of music.
Practise using “blue” in five B2-level sentences with translations.
Take a short quiz on the different meanings and uses of “blue.”
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Overview
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Library
Examples
AI Expert
Dictionaries