hermétique

Hermétique is a French adjective that describes something that is sealed, airtight, or impenetrable. It is often used in a literal sense to refer to a container or object that is closed off to prevent the escape or entry of air, liquid, or other substances. For example, a hermetically sealed jar will keep its contents fresh for a long time.

In a more figurative sense, hermétique can describe something that is difficult to understand or access, or something that is closed off to outsiders. For instance, a hermetic group or community might be one that is very insular and resistant to outside influence. Similarly, a hermetic piece of writing or art might be intentionally obscure or complex, making it challenging for the average person to comprehend. This can sometimes be perceived as a deliberate choice by the creator to appeal to a select audience or to convey a sense of mystery and depth. The term can also be applied to certain fields of study or esoteric knowledge that are not readily accessible to the general public.