blue moon
A long time.
Meaning adapted from Wiktionary, available under CC BY-SA 4.0.
“I have not seen him in a blue moon.”
“It has been a blue moon since we last visited our old family home in the countryside.”
“After a blue moon spent traveling through distant lands, the explorer finally returned to find his hometown completely transformed by time.”
- 01
ask for the moon
To claim or desire something that one cannot have.
- 02
blue chamber
A forbidden room.
- 03
blue devils
Low spirits; depression.
- 04
blue note
The flatted 5th scale degree in the blues scale.
- 05
blue ribbon
Highly superior in quality, style, substance, prestige, etc.
- 06
blue state
A state of the United States voting Democratic in a given election, or tending to vote Democratic in general.
- 07
blue wall of silence
Strict secretiveness maintained by the members of a police force with respect to information which might be contrary to their interests, especially information concerning questionable police actions.
- 08
bolt from the blue
A complete surprise; something totally unexpected.
Last updated August 10, 2026