1
be senile
senile 指因年老而身心衰弱，并非单纯表示年长。
She is not senile; she just has a bad memory.
她并不衰老，只是记性不好。
衰老的；老年期的
先理解核心含义，再看它在真实句子里的用法。
衰老的；老年期的
mentally or physically weak because of old age
She is not senile; she just has a bad memory.
她并不衰老，只是记性不好。
老年的；与老年有关的。
Of, or relating to old age.
因年老而身心衰弱
mentally or physically infirm with age
The old man is senile but still recognizes his daughter.
那位老人已经老糊涂了，但仍然能认出自己的女儿。
Her senile father often forgets to lock the door at night.
她那老糊涂的父亲经常忘记晚上锁门。
He became senile after his wife passed away, so his children take turns caring for him.
妻子去世后，他变得老糊涂了，所以孩子们轮流照顾他。
senile 指因年老而身心衰弱，并非单纯表示年长。
She is not senile; she just has a bad memory.
她并不衰老，只是记性不好。
Some people become senile in their eighties.
有些人八十多岁时变得衰老。
Senile dementia affects many older people.
老年痴呆症影响许多老年人。
Not this
My grandfather is a senile.
Use this
My grandfather is senile.
senile 是形容词，不能像名词那样在前面加冠词 a；作表语时直接用 be senile 即可。
Not this
The government should build more homes for senile people.
Use this
The government should build more homes for elderly people.
senile 特指因年老而身心衰弱，常含医学或贬义；泛指“年老的”应用 elderly 或 old。
Not this
My grandma has senile.
Use this
My grandma has senile dementia.
senile 是形容词，不能单独作疾病名称；“老年痴呆”的英文是 senile dementia，必须加上名词 dementia。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
老年性痴呆
My grandmother was diagnosed with senile dementia at the age of eighty.
我祖母八十岁时被诊断出患有老年性痴呆。
老年性白内障
Senile cataracts are a common cause of vision loss in older adults.
老年性白内障是老年人视力丧失的常见原因。
老年性变化
The doctor explained that these senile changes in the joints are normal for his age.
医生解释说，他关节的这些老年性变化在这个年龄是正常的。
老年性骨质疏松
Senile osteoporosis makes older people more likely to break a bone after a fall.
老年性骨质疏松使老年人摔倒后更容易骨折。
老年性健忘
A little senile forgetfulness is common, but severe memory loss needs medical attention.
轻微的老年性健忘很常见，但严重的记忆丧失需要就医。
我不是老糊涂了，我只是老了。
From the 1975 film 'The Sunshine Boys', written by Neil Simon; spoken by George Burns as Al Lewis, an aging former vaudeville performer.
出自1975年电影《The Sunshine Boys》（尼尔·西蒙编剧），乔治·伯恩斯饰演的年迈杂耍演员阿尔·刘易斯的台词。
Use senile naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
联想谐音“see Nile”（看尼罗河）：河岸老者又老又衰弱，正是 senile 衰老的。
语域：mixed 常见场景：医学/老年医学报告、日常谈论老年人时 该词比较常见于医学或正式语境，如“senile dementia”；日常口语中用它形容老人可能带负面或冒犯意味，需谨慎。
Genuine rhyme: none. 'Nile' is the closest: it reproduces the final /naɪl/, but 'senile' has primary stress on /si/, so they do not rhyme. 'mile', 'tactile', 'reptile', 'juvenile', and 'profile' only share the final /aɪl/ or the spelling '-ile', not the stressed vowel. Beware other '-ile' words pronounced /əl/ (e.g., 'mobile' /ˈmoʊbəl/).
Dictionary facts from ECDICT, WIKTIONARY.