mittelständisch

Usually means bourgeois or middle-class; it can also imply a conventional, respectable lifestyle, sometimes with a slightly social or ideological nuance.

A direct reference to the middle social layer; very close in meaning, but it sounds like a sociological term rather than an adjective.

Means shaped by the middle class or by small and medium-sized business culture; it usually describes an environment rather than a person directly.

Simply means middle, medium, or average in rank, size, or level; it is not necessarily related to social class.

Means average, ordinary, or unremarkable; it can describe quality, level, or performance, not social class.

Means moderate, restrained, or non-radical; it refers to opinions, politics, or behavior rather than social class.

Directly means the middle class; it is a noun, so it is very close in meaning but used differently from the adjective.

Usually means the SME sector or small and medium-sized businesses; it is not exactly the same as the social middle class, though it can be connected.

Means social or relating to society in general; it is much broader and does not specifically refer to the middle class.

A very general word meaning social, societal, or sometimes needy in a welfare context; it does not specifically point to the middle class.

Often has a slightly derogatory meaning: petty-bourgeois or philistine; it is more evaluative and negative than neutral middle-class.

Means affluent or wealthy; it is about money and prosperity, not necessarily about belonging to the middle class.