blue

/bluː/
adjectivenounBeginner
general

a color between green and violet in the visible spectrum, typically associated with the sky or ocean

The ocean was a deep blue under the sunlight.

The water appeared dark and rich in color.

💡

In color theory, blue is often considered a cool color.

informal

a state of sadness or depression

He felt blue after hearing the bad news.

He was sad and downhearted.

💡

This usage is common in informal speech and literature.

general

a blue-colored object or item

She bought a blue pen from the store.

The pen was colored blue.

💡

Used to describe objects by their color.

Collocations

blue skythe sky on a clear dayblue eyeseyes that are the color bluefeel blueto feel sad or depressed

Synonyms

Antonyms

Related Phrases

once in a blue moonidiom
very rarely
out of the blueidiom
unexpectedly
blue-collarphrase
relating to manual labor jobs

💡Pro Tip

Color Associations

Blue is often associated with calmness, trust, and stability.

Gold Rule

Adjective Usage

When describing something as blue, use it as an adjective before the noun (e.g., 'blue sky').

📖Word Origin

From Old English 'blāwe', possibly from Proto-Germanic 'blēwaz', related to the color of the sky or ocean.

📝Usage Notes

The word 'blue' can be used as both an adjective and a noun. In informal contexts, it can also refer to a state of sadness.

Word Breakdown

bl
possibly related to 'bleach' or 'blew'
root
+
-ue
suffix indicating color or state
suffix
English Dictionary