substandard
Cross references: 1. nonstandard sub.stan.dard \.s*b-'stan-d*rd, 's*b-\ aj : deviating from or falling short of a standard or norm : as : of a quality lower than that prescribed by law {~ canned goods } : conforming to a pattern of linguistic usage existing within a speech c ommunity but not that of the prestige group in that community : constituting a greater than normal risk to an insurer