Esp. of an occupation, education, or area of study: (in early use) worthy of or suitable for a person of noble birth or superior social status…

Of a pastime, behaviour, or thing: that is characteristic of or befits a gentleman; having features associated with the status, character, or…

Suitable for, associated with, or characteristic of people of high social position, or (in later… Of a custom, attitude, way of behaving, etc.