senile adj : mentally or physically infirm with age; "his mother was doddering and frail" [syn: doddering, doddery, gaga]
Senile means related to aging. For example, senile weakness is a form of weakness happening in old people.
The word senile comes from the latin sen meaning "old". This word was first coined in 1661. In Persian language, "سن" (pronounced as "sen") means "age".
Senile may also refer to Dementia, which is a disease typically seen in the elderly.
aged, aging, ancient, anile, childish, childlike, crabbed, debilitated, declining, decrepit, doddered, doddering, doddery, doited, dotard, doting, dotty, enfeebled, failing, feeble, fogy, fogyish, forgetful, fossilized, fuddy-duddy, gerontal, gerontic, infirm, mossbacked, moth-eaten, mummylike, old, old fart, old fogy, old-fogy, old-fogyish, palsied, papery-skinned, ravaged with age, rickety, run to seed, rusty, senescent, shaky, shattered, shriveled, simple, stodgy, stricken in years, stuffy, timeworn, tottering, tottery, weak, withered, wizened