1
a moment of forgetfulness
a moment of forgetfulness 意为“一时健忘”，常用来解释短暂、无意的失误。
In a moment of forgetfulness, she left her phone on the bus.
一时健忘，她把手机落在了公交车上。
健忘；善忘；遗忘
先理解核心含义，再看它在真实句子里的用法。
健忘；善忘；遗忘
tendency to forget
In a moment of forgetfulness, she left her phone on the bus.
一时健忘，她把手机落在了公交车上。
健忘；易忘
The quality of being forgetful; proneness to let slip from the mind.
健忘的倾向
tendency to forget
遗忘；忘却
Loss of remembrance or recollection; a ceasing to remember; oblivion.
因疏忽或粗心未能记住而导致的无意识
unawareness caused by neglectful or heedless failure to remember
Her forgetfulness made her miss several important appointments last week.
她的健忘让她上周错过了几个重要的约会。
AI contextual example
His forgetfulness about birthdays often upset his friends.
他记不住生日这点常常让朋友们不高兴。
AI contextual example
The doctor said the patient's forgetfulness was caused by lack of sleep.
医生说这位病人的健忘是由睡眠不足引起的。
AI contextual example
his forgetfulness increased as he grew older
随着年龄的增长,他越来越健忘。
WordNet
a moment of forgetfulness 意为“一时健忘”，常用来解释短暂、无意的失误。
In a moment of forgetfulness, she left her phone on the bus.
一时健忘，她把手机落在了公交车上。
forgetfulness of sth 后接具体事物，表示“对某事的健忘”。
Her forgetfulness of details sometimes causes problems.
她对细节的健忘有时会造成问题。
due to forgetfulness 用来交代原因，常用于解释错误或疏漏。
The error was due to forgetfulness, not carelessness.
这个错误是因为健忘，而不是粗心。
suffer from forgetfulness 指长期或经常性地健忘，多与衰老或疾病相关。
As she aged, she began to suffer from forgetfulness.
随着年岁增长，她开始受到健忘的困扰。
Not this
His forgetful made him miss the meeting.
Use this
His forgetfulness made him miss the meeting.
汉语中“健忘”可作名词或形容词，但英语 forgetful 只是形容词，不能作主语；表示“健忘”这一状态需要用名词 forgetfulness。
Not this
Her forgetfulness to pay the bills caused trouble.
Use this
Her forgetfulness in paying the bills caused trouble.
动词 forget 后可以接不定式（forget to pay），但名词 forgetfulness 不能接不定式；表示“在付账这件事上健忘/疏忽”应用 in doing。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
老年性健忘
Senile forgetfulness is common in very old people.
老年性健忘在年纪很大的人中很常见。
一时健忘
She felt embarrassed by her momentary forgetfulness of his name.
她因一时忘记他的名字而感到尴尬。
一阵健忘
After the illness, he had a bout of forgetfulness.
生病之后，他出现了一阵健忘。
日益严重的健忘
He showed increasing forgetfulness as the disease progressed.
随着病情恶化，他表现出越来越严重的健忘。
由于健忘
The mix-up was due to forgetfulness.
这场混乱是因为健忘造成的。
记不住名字
His forgetfulness of names often makes conversations awkward.
他记不住名字，这常让谈话很尴尬。
遗忘是一种自由。
An aphorism from Kahlil Gibran's 'Sand and Foam', suggesting that the ability to let go of memories brings liberation.
出自纪伯伦的《沙与沫》，意即能够放下记忆会带来心灵的自由。
Use forgetfulness naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
把 forgetfulness 拆成 forget（忘记）+ fulness（充满），画面：脑袋被‘忘记’塞满，所以总健忘。
语域：neutral 常见场景：日常交谈、医疗/健康咨询、书面说明 该词表示“健忘、容易忘记”的状态或倾向，语气中性偏正式；日常对话和较正式的文章中都可用，在医疗或心理学等讨论记忆的语境中比较常见。
forget 和 forgetful 与 forgetfulness 共享重读的 /ɡɛt/ 音和词根，但只有 forgetful 还带有 /fəl/ 后缀；所列 -ness 词（fullness、illness、happiness、thoughtfulness）拼写以 -ness 结尾，但重音和元音不同，并不押韵。
Dictionary facts from DICTIONARY_API_DEV, ECDICT, WIKTIONARY.