look out for number one

== English == === Alternative forms === look for number one look out for Number One === Etymology === From look out for + number one (“oneself”). Attested since the 1830s at the latest. === Pronunciation === === Verb === look out for number one (third-person singular simple present looks out for number one, present participle looking out for number one, simple past and past participle looked out for number one) (idiomatic) To act in one's own interests; to act in a manner advantageous primarily to oneself. ==== Related terms ==== look out, number one, numero uno ==== Translations ==== ==== See also ==== every man for himself mind one's own business main chance