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extracurricular + noun
extracurricular 常作定语，修饰 activities、classes、sports 等名词。
She joined several extracurricular clubs at school.
她在学校参加了几个课外社团。
课外的
先理解核心含义，再看它在真实句子里的用法。
课外的
outside the regular academic curriculum
She joined several extracurricular clubs at school.
她在学校参加了几个课外社团。
学校正常课程之外的。
Outside of the normal curriculum of an educational establishment.
课外的
outside the regular academic curriculum
超出工作或职业正常职责之外的。
Similarly outside of the normal duties of a job or profession.
工作或职业职责之外的
outside the regular duties of your job or profession
She joined several extracurricular activities, including the chess club and the school newspaper.
她参加了几个课外活动，包括国际象棋社团和校报。
AI contextual example
After school, he spends most of his time on extracurricular sports instead of going straight home.
放学后，他把大部分时间花在课外体育运动上，而不是直接回家。
AI contextual example
The school encourages every student to take part in at least one extracurricular club.
学校鼓励每个学生至少参加一个课外社团。
AI contextual example
sports and drama are popular extracurricular activities
体育和戏剧是广受欢迎的课外活动。
WordNet
extracurricular 常作定语，修饰 activities、classes、sports 等名词。
She joined several extracurricular clubs at school.
她在学校参加了几个课外社团。
作表语时表示“属于课程以外的”，用法较少见。
These lectures are extracurricular, so they are optional.
这些讲座是课外的，所以可自愿参加。
Not this
I have extracurricular activity every day.
Use this
I have an extracurricular activity every day.
activity 是可数名词，单数形式前需要限定词（如 an），不能裸用。
Not this
I joined many extracurricular after school.
Use this
I joined many extracurricular activities after school.
extracurricular 是形容词，不能单独作复数名词；后接名词 activities 才是正确搭配。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
课外活动
She joined several extracurricular activities at school.
她参加了学校的几项课外活动。
课外项目
The university offers many extracurricular programs for students.
这所大学为学生提供许多课外项目。
课外参与
Colleges often look at extracurricular involvement when reviewing applications.
大学在审核申请时通常会看重课外参与情况。
课外爱好
He balanced his academic work with extracurricular pursuits like music and debate.
他通过音乐和辩论等课外爱好来平衡学业。
课外社团
The school has a wide range of extracurricular clubs to choose from.
学校有各种各样的课外社团可供选择。
课外活动；也婉指婚外情或本职工作以外的活动
Their marriage broke up after she discovered his extracurricular activities.
她发现他搞婚外情后，他们的婚姻破裂了。
Use extracurricular naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
extra（额外的）+ curricular（课程的）→ 课程之外的活动，联想放学后的社团或球赛。
语域：neutral 常见场景：校园生活、教育语境 该词通常用于谈论学校课程之外的活动，多出现在校园或教育相关场合，属于中性用语。
这些词都以 -icular 结尾，重音后的元音和尾音 /ɪkjəlɚ/ 与 extracurricular 相同：particular、perpendicular、vehicular、curricular。注意拼写相似的 spectacular /spɛkˈtækjəlɚ/、molecular /məˈlɛkjəlɚ/、tubular /ˈtuːbjəlɚ/ 发音不同，不要混淆。
Dictionary facts from ECDICT, OCTANOVE, WIKTIONARY.