adjective
1. not conforming to the language usage of a prestige group within a community
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a nonstandard dialect is one used by uneducated speakers or socially disfavored groups
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"the common core of nonstandard words and phrases in folk speech"- A.R.Dunlap
• Ant: ↑standard
• Similar to: ↑bad, ↑unacceptable, ↑unaccepted
• Topics: ↑linguistics
2. varying from or not adhering to a standard
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nonstandard windows
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envelopes of nonstandard sizes
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nonstandard lengths of board
• Ant: ↑standard
• Similar to: ↑deficient, ↑inferior, ↑substandard, ↑nonnormative
3. not standard; not accepted as a model of excellence
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a nonstandard text
• Ant: ↑standard
Useful english dictionary. 2012.