Substandard | Definition of substandard by Merriam-Webster

Full Definition of SUBSTANDARD

: deviating from or falling short of a standard or norm: as

a : of a quality lower than that prescribed by law <substandard housing>

b : conforming to a pattern of linguistic usage existing within a speech community but not that of the prestige group in that community

c : constituting a greater than normal risk to an insurer

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1897

Synonyms: bastard, bush, bush-league, crummy (also crumby), deficient, dissatisfactory, ill, inferior, lame, lousy, off, paltry, poor, punk, sour, suboptimal, subpar, bad, unacceptable, unsatisfactory, wack [slang], wanting, wretched, wrong

Antonyms: acceptable, adequate, all right, decent, fine, OK (or okay), passable, respectable, satisfactory, standard, tolerable

: lower in quality than expected

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