Synonyms of nonstandard

Adjective

1. nonstandard (vs. standard), bad, unacceptable, unaccepted

usage: not conforming to the language usage of a prestige group within a community; "a nonstandard dialect is one used by uneducated speakers or socially disfavored groups"; "the common core of nonstandard words and phrases in folk speech"- A.R.Dunlap

2. nonstandard (vs. standard), deficient, inferior, substandard, nonnormative

usage: varying from or not adhering to a standard; "nonstandard windows"; "envelopes of nonstandard sizes"; "nonstandard lengths of board"

3. nonstandard (vs. standard)

usage: not standard; not accepted as a model of excellence; "a nonstandard text"

Definition and meaning of nonstandard (Dictionary)