informal

"African borrowers have long paid a high-risk premium and standard models can miss the informal economy, domestic savings and reforms," said Jacob Oreki, a management consultant at Kenya's Strathmore University Foundation.

From Barron's ● Oct. 7, 2026

But successive governments have struggled to regulate the country's extensive artisanal and small-scale mining industry, where smuggling and informal trading have made it difficult for the authorities to account for all the gold produced.

From BBC ● Sep. 29, 2026

Karl van Bibber, a Berkeley professor of nuclear engineering, served as Seiler's informal adviser on subjects ranging from X-ray imaging to scientific publishing.

From Science Daily ● Sep. 26, 2026

Soon the two were addressing each other with the informal “du” pronoun, as family and lovers do, instead of the formal “Sie”—a big deal for a single man and married woman in 1850s Germany.

From The Wall Street Journal ● Sep. 25, 2026

Everything Will could see spoke of wealth and power, the sort of informal settled superiority that some upper-class English people still took for granted.

From "The Subtle Knife" by Philip Pullman