- 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.
- of or belonging to old age or aged persons; gerontological; geriatric.
- Physical Geography. (of topographical features) having been reduced by erosion to a featureless plain that stands everywhere at base level.Compare peneplain.
- a senile person.
Origin of senile
Examples from the Web for senile
Infantile paradoxy is, however, very different to senile paradoxy.The Sexual Question
The hunger that possessed her made her wag her head as if senile.L'Assommoir
His father-in-law was paralyzed and his aunt-in-law was senile.The Gorgeous Girl
"I've not been as idle as Tode thinks," said Parrish, with a senile leer.
Her old husband, too, overheard it, and took snuff with a senile chuckle.Brother Copas
Sir Arthur Thomas Quiller-Couch
- of, relating to, or characteristic of old age
- mentally or physically weak or infirm on account of old age
- (of land forms or rivers) at an advanced stage in the cycle of erosionSee old (def. 18)
Word Origin and History for senile
1660s, "suited to old age," from French sénile (16c.), from Latin senilis "of old age," from senex (genitive senis) "old, old man," from PIE root *sen- "old" (cf. Sanskrit sanah "old;" Avestan hana- "old;" Old Persian hanata- "old age, lapse of time;" Armenian hin "old;" Greek enos "old, of last year;" Lithuanian senas "old," senis "an old man;" Gothic sineigs "old" (used only of persons), sinistra "elder, senior;" Old Norse sina "dry standing grass from the previous year;" Old Irish sen, Old Welsh hen "old"). Meaning "weak or infirm from age" is first attested 1848.
- Relating to, characteristic of, or resulting from old age.
- Exhibiting the symptoms of senility, as impaired memory or the inability to perform certain mental tasks.