Senile definition: showing a decline or deterioration of physical strength or mental functioning, especially short-term memory and alertness, as a result of old age or disease..

SENILE definition: 1. showing poor mental ability because of old age, especially being unable to think clearly and…. Learn more.

Oct 16, 2025 · "Senile" and "senility," though, are more commonly used to describe age-related cognitive decline—as in senile Alzheimer's, senile dementia, and senile plaques.

Senile describes a decline in mental or physical functioning associated with old age. It can refer to a state of deterioration in cognitive abilities, such as memory and judgment, that occurs in …

Definition of senile adjective in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

If old people become senile, they become confused, can no longer remember things, and are unable to look after themselves. He was showing unmistakable signs of senility.

Senile (adjective): Relating to or displaying the physical and mental impairments associated with old age, particularly those stemming from mental deterioration such as memory loss or …

The meaning of SENILE is of, relating to, exhibiting, or characteristic of old age; especially, sometimes disparaging + offensive : exhibiting a decline of cognitive abilities (such as …

SENILE meaning: 1. showing poor mental ability because of old age, especially being unable to think clearly and…. Learn more.

senile (ˈsiːnaɪl) adj 1. of, relating to, or characteristic of old age 2. mentally or physically weak or infirm on account of old age