subnormal

substandard, below normal

s u b n o ɾ ˈm a l
sub under-, below, or subordinate to + normal normally, as usual
adjective Rare #41,665
substandard, below normal Often used in a formal/technical way (e.g., statistics, science).
SP: La temperatura fue subnormal durante toda la semana.
EN: The temperature was below normal all week.

Vamos, subnormal.

Come on, you moron.

— Amelie (2001)

Subnormal.

Subnormal.

— La ola (2008)

Tu hermano siempre ha sido subnormal.

Your brother has always been mentally challenged.

— La ola (2008)

Subnormal tú.

You're a moron.

— La ola (2008)

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)