1) Abnormal 2) Irregular 3) Nonnormative 4) Substandard 5) Unaccepted 6) Worse 1) Like dialect 2) Nonstandard English 3) Not standard 4) Unacceptable 5) Unaccepted 
[adj] - (linguistics) not conforming to the language usage of a prestige group within a community 2. [adj] - varying from or not adhering to a standard 3. [adj] - not standard
adjective not standard; not accepted as a model of excellence; `a nonstandard text`
not standard. · not conforming in pronunciation, grammar, vocabulary, etc., to the usage characteristic of and considered acceptable by most educated native speakers; lacking in social prestige or regionally or socially limited in use:Cf.(def. 27). a nonstandard dialect; nonstandard English. · of or pertaining to a generalized system of...