the.com/moron

Once a clinical term for intellectual disability, now a casual insult—a history worth remembering.

means A deeply stupid or foolish person — a term that curdled from clinical label into everyday insult.

from Coined in the early 1900s by psychologist Henry H. Goddard, who borrowed the Greek 'moros' (dull, stupid) to create a technical classification for adults with a mental age of roughly 8 to 12, part of an early IQ-based grading system that also included 'imbecile' and 'idiot.' The term was meant to be clinical and neutral, but like those other words, the public seized on it as an insult almost immediately, and within a few decades it had shed its scientific coat entirely, surviving today only as the thing you call someone who cuts you off in traffic.

origin
Coined 1910 by psychologist Henry Goddard, from Greek moros
original meaning
Adult with mental age of 8 to 12
IQ range
Classified as 51 to 70 on early tests
fall from grace
Abandoned clinically by the 1960s for being cruel
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