Liberal Dictionary English Dictionary
noun Psychiatry.
- lack of intellectual development; imbecility; severe mental retardation.
noun
- severe mental deficiency, usually congenitalCompare dementia
“mental deficiency,” late 14c., from Latin amentia “madness,” from amentem “mad,” from a- “away from” + mentem “mind” (see mind (n.)).
n.
- Insufficient mental development or functioning.