noun which may take the genitive case particle 'no'
non-standard
Used to describe something that does not conform to a standard, norm, or typical specification. Often appears in technical or formal contexts.
This device uses non-standard parts.
We solved the problem using a non-standard method.
Compound of 非 (hi, 'non-') and 標準 (hyōjun, 'standard'). The prefix 非 is a common Sino-Japanese negating element.