substandard

Definitions

Below the usual or required standard.

Of a quality that is inferior or inadequate.

Examples

The construction company was fined for using substandard materials in the new apartment complex.

The manager refused to accept the shipment because the quality of the goods was clearly substandard.

Many critics argued that the film's script was substandard and failed to live up to the director's previous work.

Synonyms

inferior deficient flawed mediocre shoddy inadequate poor

Antonyms

superior excellent outstanding exceptional standard adequate satisfactory