sub‧stan‧dard /ˌsʌbˈstændəd◂ $ -ərd◂/
adjective [
Word Family: noun:
standard,
standardization;
adjective: stardard,
substandard;
verb:
standardize]
not as good as the average, and not acceptable ⇒
non-standard,
standard:
substandard housing [TahlilGaran] Dictionary of Contemporary English ▲