substandard
sub-stan-dard
adjective
Of a quality or standard that is below what is normal or acceptable.
"The building work was substandard."
Thesaurus
Synonyms: deficient, inferior, nonstandard
sub-stan-dard
Of a quality or standard that is below what is normal or acceptable.
"The building work was substandard."
Synonyms: deficient, inferior, nonstandard