1
infantile + noun
His infantile jokes annoyed everyone at the table.
他那些幼稚的玩笑让饭桌上的每个人都感到厌烦。
幼稚的；不成熟的
先理解核心含义，再看它在真实句子里的用法。
幼稚的；不成熟的
indicating a lack of maturity
His infantile jokes annoyed everyone at the table.
他那些幼稚的玩笑让饭桌上的每个人都感到厌烦。
婴儿的。
Pertaining to infants.
显示缺乏成熟
indicating a lack of maturity
幼稚的；不成熟的。
Childish; immature.
关于婴儿或婴儿期的
of or relating to infants or infancy
His constant tantrums struck everyone as infantile behavior for a grown man.
他动不动就发脾气，在大家看来，一个成年男子这样简直是幼稚的行为。
AI contextual example
Stop making such infantile jokes during the meeting; we have serious work to do.
开会时别再开这种幼稚的玩笑了，我们有正经工作要做。
AI contextual example
The critics dismissed the movie's plot as infantile and predictable.
影评人认为这部电影的情节幼稚且可预测。
AI contextual example
infantile behavior
幼稚的行为。
WordNet
His infantile jokes annoyed everyone at the table.
他那些幼稚的玩笑让饭桌上的每个人都感到厌烦。
Her reaction to the criticism was completely infantile.
她对批评的反应非常幼稚。
这里的 of sb 表示行为主体，这种句型常带有批评意味。
It was infantile of him to hide his colleague's files as a prank.
他把同事的文件藏起来当作恶作剧，真是太幼稚了。
I find his constant excuses infantile and hard to accept.
我觉得他那些没完没了的借口既幼稚又让人难以接受。
Not this
He is too infant to make his own decisions.
Use this
He is too infantile to make his own decisions.
infant 是名词，表示“婴儿”，不能单独作表语形容词；infantile 才是形容词，表示“幼稚的、不成熟的”。将 infant 换成 infantile 才能正确修饰主语。
Not this
In his infantile, he suffered from many illnesses.
Use this
In his infancy, he suffered from many illnesses.
infantile 是形容词，不能作名词使用；表示“婴儿期”应用名词 infancy，并用于介词短语 in one's infancy 中。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
幼稚行为
His infantile behavior at the meeting embarrassed everyone.
他在会议上的幼稚行为让所有人都感到尴尬。
幼稚的幽默
The movie relies on infantile humor to appeal to young children.
这部电影依靠幼稚的幽默来吸引幼儿。
幼稚的态度
Her infantile attitude toward criticism made the conversation impossible.
她对待批评的幼稚态度使谈话无法进行。
幼稚性退行
The therapist interpreted his infantile regression as a response to stress.
治疗师将他的幼稚性退行解释为对压力的反应。
婴儿期遗忘
Infantile amnesia explains why few people remember their first three years.
婴儿期遗忘解释了为什么很少有人记得自己三岁以前的事。
小儿麻痹症
Infantile paralysis was a common childhood disease before the vaccine.
在疫苗出现之前，小儿麻痹症是一种常见的儿童疾病。
Use infantile naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
把 infantile 拆成 infant（婴儿）+ ile，婴儿般的行为就是“幼稚的、不成熟的”。
语域：formal 常见场景：formal writing、psychological evaluation 该词表示“幼稚的、不成熟的”，多用于正式批评或心理学描述中，属于书面、严肃的语气；日常口语中比较少见。
None of the words below is a true rhyme with infantile /ˈɪnfəntɪl/, because infantile stresses the first syllable /ɪn/ and the final /tɪl/ is unstressed; a rhyme would need to match /ˈɪn...tɪl/, and there are no common words in that pattern. The -ile spellings are lookalikes: most in the list are pronounced /aɪl/, while infantile uses /ɪl/. In American English, some of these -ile adjectives may be reduced to /əl/ (e.g., hostile /ˈhɑːstəl/, futile /ˈfjuːtəl/).
Dictionary facts from ECDICT, WIKTIONARY.