Adjective
pertaining to or causing degeneration in the offspring produced
Source: WordNetThe main objects of the Population Congress would be [...] (f) to give certain dysgenic groups in our population their choice of segregation or sterilization. Margaret Sanger
They estimate that there has been a dysgenic decline in the world's genotypic IQ (masked by the Flynn effect for the phenotype ) of 0.86 IQ points per decade for the years 1950–2000. Source: Internet
Shockley argued that a higher rate of reproduction among the less intelligent was having a dysgenic effect, and that a drop in average intelligence would ultimately lead to a decline in civilization. Source: Internet