syntymäpäiväinen

Syntymäpäiväinen is a Finnish adjective that translates to "birthday" or "birth anniversary" in English. It is used to describe something related to a person's birthday or a celebration of it. The word is derived from "syntymäpäivä," which means birthday.

As an adjective, syntymäpäiväinen can modify nouns to specify their connection to a birthday. For example, one might refer to a "syntymäpäiväinen kakku" (birthday cake) or "syntymäpäiväinen onnittelu" (birthday greeting). It can also be used in a more general sense to refer to something that occurs on a birthday, such as a "syntymäpäiväinen tapaaminen" (birthday meeting). The adjective conveys the idea of something being pertaining to or characteristic of a birthday.

The term is commonly used in everyday conversation and in written Finnish. It is a straightforward and descriptive word, clearly indicating the context of a birthday celebration or event. While "birthday" as a noun is often used directly in English, the Finnish adjective syntymäpäiväinen provides a specific grammatical form to link other words to the concept of a birthday. Its usage is consistent with how adjectives function in the Finnish language to provide descriptive detail.