
The difficulty rating of NYT Connections #399 is 2.6 out of 5, according to the Connections Companion. The puzzle is slightly harder than the previous day's answers.

In Connections #399, there are a total of 16 answers provided, which are divided into four categories: Slender Projections, Conditions for Collectibles, Profession, and Words before "Nut". Each category consists of four words that share a common theme, making a total of 4 answers per category.

The four categories in puzzle #399 are: 1) Slender projections (yellow), which includes words like point, prong, tine, and tip. 2) Conditions for collectibles (green), featuring words such as fair, fine, good, and mint. 3) Profession (blue), with words like business, field, line, and trade. 4) Words before "nut" (purple), including Brazil, butter, dough, and pine.