having the color of the clear sky or the deep sea, feeling sad, unhappy, or depressed, conservative or reactionary in political views

out of the blue, once in a blue moon, feeling blue

Formal and Informal Expressions of blue

In different contexts, you can replace 'blue' with suitable alternatives. In a more formal setting, 'azure, cerulean' is apt. In informal speech or writing, 'sad, down, bummed' is a commonplace synonym.

blue: Explore its Definition & Usage

blue Definition

1having the color of the clear sky or the deep sea
2feeling sad, unhappy, or depressed
3conservative or reactionary in political views

Using blue: Examples

Take a moment to familiarize yourself with how "blue" can be used in various situations through the following examples!

Example
She wore a blue dress to the party.
Example
The ocean was a beautiful shade of blue.
Example
He was feeling blue after his breakup.
Example
The politician had blue views on immigration.

blue Synonyms and Antonyms

Synonyms for blue

Antonyms for blue

Phrases with blue

out of the blue
unexpectedly and without warning
Example
The news of her promotion came out of the blue.
once in a blue moon
very rarely; almost never
Example
I only eat fast food once in a blue moon.
feeling blue
feeling sad or depressed
Example
After her dog died, she was feeling blue for weeks.

📌

Summary: blue in Brief

The word 'blue' [bluː] can refer to the color of the sky or sea, as well as feelings of sadness or depression. It can also describe conservative political views. Phrases like 'out of the blue' and 'once in a blue moon' denote unexpectedness or rarity, while 'feeling blue' means feeling sad or depressed.