nonstandard
adjective
1. 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
Similar word(s): bad, unacceptable, unaccepted
2. varying from or not adhering to a standard
- nonstandard windows
- envelopes of nonstandard sizes
- nonstandard lengths of board
Similar word(s): deficient, inferior, substandard, nonnormative
3. not standard; not accepted as a model of excellence
- a nonstandard text
noun
1. Something that is not standard.