nonstandard

/nɑnˈstændərd/
adjective
  1. Different from what is usual, expected, or officially accepted; not conforming to a standard.
    • The company rejected the nonstandard parts because they didn't fit the machine.
    • The mechanic used a nonstandard tool to fix the unusual bolt.
    • Her dialect includes some nonstandard grammar that is common in her region.
What does "nonstandard" mean? | whatsthatwordmean | whatsthatwordmean