Feather in one's cap Neutral

An accomplishment or honor that someone can take pride in, especially one that stands out and enhances their reputation.

It’s usually mentioned as one achievement among several — a specific, credit-worthy success that adds to someone’s overall standing rather than defining their whole career.

The image draws on a widespread historical custom, documented across many unrelated cultures, of adding a visible feather to a hat or headdress to mark a specific achievement, most often success in battle or the hunt. Several Native American nations, including peoples of the northern Plains, used exactly this practice, adding a new feather to a headdress for each notable deed; entirely independently, hunters in parts of Britain reportedly plucked a feather from the first woodcock they killed each season and wore it in their cap, and similar customs have been described among Hungarian, Mongol, and other historically unconnected peoples. Because the custom appears so widely and independently across cultures with no contact with one another, no single origin story fully explains the English phrase — it seems to be less a specific historical reference than a natural, near-universal way of visibly marking achievement on the body.

Winning that award was a real feather in her cap.

Landing this client would be another feather in our cap.

Getting promoted twice in one year is quite a feather in his cap.

A: “She published in that top journal.” B: “Definitely a feather in her cap.”