IdiomDaily LifeEnglish

look out for number one

Meaning: To put one's own interests first.

Example: “In that office everyone looks out for number one.”

Origin: "Number one" for oneself is recorded from the 18th century, and the phrase became common in 20th-century American English.

Equivalents in other languages

See all 4 languages side by side →

More English idioms

Explore another collection: Untranslatable Words

Words that capture a feeling or idea English needs a whole sentence for.

  • Râler To complain and grumble with a certain national flair — a beloved French pastime.
  • Mono no aware A bittersweet awareness of impermanence — the gentle sadness and appreciation that arise…
  • Ikigai The thing that makes you want to get out of bed — the intersection of what you love, what…

Browse all untranslatable words →

Keep exploring

Explore all idioms →