Meaning:
"Once in a blue moon" refers to something that occurs very infrequently. The term "blue moon" is an astronomical phenomenon that happens when there are two full moons within a single calendar month, which is a rare event. Thus, anything that happens "once in a blue moon" is considered uncommon or rare.
Examples:
- We only get to see our cousins who live abroad once in a blue moon.
- He only goes to the gym once in a blue moon, so he’s not in great shape.
- Once in a blue moon, we treat ourselves to a fancy dinner downtown.
- She visits her grandparents once in a blue moon because they live far away.
- Once in a blue moon, a comet is visible to the naked eye.
- He only wears that suit once in a blue moon, usually for weddings or funerals.
- The old friends only catch up once in a blue moon, but when they do, it’s like no time has passed.
- We get snow in this region once in a blue moon, so it’s always exciting when it happens.
- I enjoy a decadent dessert once in a blue moon, as I’m usually on a strict diet.
- She buys a lottery ticket once in a blue moon, just for fun.
- Once in a blue moon, he takes a day off work to relax and recharge.
- They only go on a big vacation once in a blue moon, so they make it count.
- The small village experiences power outages once in a blue moon.
- Once in a blue moon, a groundbreaking invention changes the way we live.
- He’ll help with the housework once in a blue moon, but it’s a rare occurrence.
- The love that turns into magic once in a blue moon.
- For once in a blue moon that makes me the genius.
- It does me good to do this once in a blue moon.