substandard, below normal
Vamos, subnormal.
Come on, you moron.
— Amelie (2001)
Subnormal.
— La ola (2008)
Tu hermano siempre ha sido subnormal.
Your brother has always been mentally challenged.
Subnormal tú.
You're a moron.
Oye, subnormal, que mi cuñado ya no estaba en la empresa cuando yo entré.
Listen, you moron—my brother-in-law wasn't at the company anymore when I joined.
— Los lunes al sol (2002)