nonstandard

Varying from or not adhering to the standard.

Associated with a language variety used by uneducated speakers or socially disfavored groups.

varying from or not adhering to a standard. Opposite of standard.

Not conforming to the language usage of a prestige group within a community. Opposite of standard.

Not standard.

Not conforming to the language as used by the majority of its speakers.

Something that is not standard.

not conforming to the language usage of a prestige group within a community

not standard; not accepted as a model of excellence

varying from or not adhering to a standard