Im′be‐cil″i‐ty (?), n.; pl.Imbecilities (#). [L. imbecillitas: cf. F. imbécillité.] The quality of being imbecile; weakness; feebleness, esp. of mind.
Cruelty... argues not only a depravedness of nature, but also a meanness of courage and imbecility of mind. Sir W. Temple.
☞ This term is used specifically to denote natural weakness of the mental faculties, affecting one's power to act reasonably or intelligently.
Syn. — Debility; infirmity; weakness; feebleness; impotence. See Debility.