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frivolous + noun
frivolous 常修饰法律、投诉等名词，表示缺乏法律依据。
The court dismissed the frivolous lawsuit.
法院驳回了这起轻佻的诉讼。
不严肃的；轻浮的；琐碎的
先理解核心含义，再看它在真实句子里的用法。
不严肃的；轻浮的；琐碎的
not serious in content or attitude or behavior
The court dismissed the frivolous lawsuit.
法院驳回了这起轻佻的诉讼。
多含贬义，指人或言行不严肃、轻浮；用于事物时表示琐碎无聊。
在不合适的时间或方式显得愚蠢；缺乏正当理由或随心所欲
Silly, especially at an inappropriate time or in an inappropriate manner; lacking a good reason for being, or for doing what one does; due to or moved by a caprice or whim.
内容、态度或行为不严肃
not serious in content or attitude or behavior
无足轻重；不值得注意；轻微；琐碎
Of little weight or importance; not worth notice; slight; trivial.
没有合理成功前景的,因为其主张没有依据,缺乏法律或事实基础,而提交方知道或应当知道这一点
Having no reasonable prospect of success because its claim is without merit, lacking a supporting legal or factual basis, while the filing party is, or should be, aware of this.
His frivolous jokes at the ceremony made some guests uncomfortable.
他在典礼上开的轻浮玩笑让一些客人感到不舒服。
AI contextual example
The discussion became so frivolous that we forgot the main purpose of the meeting.
讨论变得如此琐碎，以至于我们忘了会议的主要目的。
AI contextual example
She refused to buy a frivolous dress just because it was on sale.
她拒绝仅仅因为打折就买一条无意义的裙子。
AI contextual example
a frivolous novel
一部肤浅的小说
WordNet
frivolous 常修饰法律、投诉等名词，表示缺乏法律依据。
The court dismissed the frivolous lawsuit.
法院驳回了这起轻佻的诉讼。
作表语时描述人或行为不严肃。
Her remarks were frivolous and unprofessional.
她的言论轻佻且不专业。
接复合宾语结构，表示认为某人或某事轻浮/琐碎。
The manager found the employee's complaint frivolous.
经理认为该员工的投诉毫无意义。
Not this
He behaves frivolous in class.
Use this
He behaves frivolously in class.
frivolous是形容词，不能修饰动词behaves；应使用副词frivolously。
Not this
Don't spend money on frivolous.
Use this
Don't spend money on frivolous things.
frivolous是形容词，不能直接作介词on的宾语；需要加上被修饰的名词，如things。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
无根据的诉讼
The judge dismissed the case as a frivolous lawsuit.
法官认为该案毫无根据，予以驳回。
乱花钱；挥霍
She was criticized for her frivolous spending on luxury items.
她因大肆挥霍购买奢侈品而受到批评。
轻浮的言语
His frivolous remarks during the meeting were not appreciated.
他在会议上的轻浮言论不受欢迎。
无聊的问题
Stop asking frivolous questions and focus on the task.
别再问无聊的问题了，专心做事吧。
无理投诉
Many of the complaints were dismissed as frivolous.
许多投诉因无意义而被驳回。
Use frivolous naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
把 fri 联想成 free（自由），vol 联想成 weight（重量）：自由到没分量，轻飘飘的，就是 frivolous——轻浮、琐碎。
语域：mixed 常见场景：法律/诉讼、日常消费与生活方式、正式评论或批评 frivolous 多用于正式或书面表达，法律语境中常指“无根据的”或“无意义的”（如 a frivolous lawsuit）；日常口语中较少用，但可说 a frivolous spending 表示无谓的花费。通常带有批评或不严肃的语气，使用时需结合具体搭配。
这些词与 frivolous 一样以 -lous 结尾，并都含弱读收尾 /ələs/（如 fabulous /ˈfæbjələs/、ridiculous /rɪˈdɪkjələs/ 等实际读作 /jələs/），但重音和元音不同，所以并不与 frivolous 严格押韵。frivolous 重音在首音节 /ˈfrɪvələs/；fabulous、populous、credulous 也重读首音节，而 ridiculous、meticulous、miraculous 的重音在第二音节。注意拼写相近的 frivolity /frɪˈvɒləti/ 读音差别很大，不能按 -lous 类推。
Dictionary facts from ECDICT, WIKTIONARY.