nonidentical

adj, noun — 2 senses

adj

Etymology From non- + identical.

Not identical; different in some respect.

noun

Etymology From non- + identical.

A twin other than an identical twin.

Thus, it would be expected that identical twins would more frequently both be delinquent than nonidenticals, in cases in which one identical twin had been delinquent.1961, Harry Manuel Shulman, Juvenile Delinquency in American Society, page 330:

Entry derived from the Wiktionary, under licence CC BY-SA 4.0 — list of authors.