correct

Compared meaning: correct or appropriate (adjective).

比较义项：正确的、恰当的（形容词）。

• right

  The most general and common of the four; used loosely in everyday speech for anything correct or appropriate, without special emphasis on accuracy or formality.

  四者中最通用、最口语化的词；日常用语中泛指正确或恰当的事物，不特别强调准确性或正式程度。

  That is the right answer to this math problem.

  那是这道数学题的正确答案。

• correct 本词

  Emphasizes factual accuracy and the absence of mistakes or errors; commonly used for answers, information, grammar, or data, and sounds more formal or technical than right.

  强调事实准确、没有错误；常用于答案、信息、语法或数据，语气比 right 更正式或专业。

  Please check that all the details in the form are correct.

  请检查表格中的所有细节是否正确。

• proper

  Stresses conformity to accepted standards, rules, or social norms rather than mere accuracy; often implies correct procedure, manners, or decorum, and can sound somewhat formal.

  强调符合公认的标准、规则或社会规范，而非单纯的准确性；常暗示正确的程序或礼节，语气略正式。

  You should use the proper tools for this repair job.

  你应该用适当的工具来做这项维修工作。

• fitting

  Highlights that something matches or suits a particular situation, occasion, or context especially well; often used for actions, endings, or tributes, with a literary or formal tone.

  强调某事物与特定情境、场合十分相称；常用于描述行为、结局或致敬等，带有书面语或正式色彩。

  A quiet ceremony seemed like a fitting tribute to her.

  一场安静的仪式似乎是对她恰如其分的致敬。

Right, correct, proper, and fitting all mean correct or appropriate. Right is the most common, general word. Correct stresses accuracy. Proper stresses following accepted rules or manners, more formal. Fitting stresses matching an occasion, with a literary tone. Right's other sense is not compared here.

这四个词在“正确的/恰当的”这个意义上很接近，但语气和侧重点不同：right 最通用口语化，correct 强调事实准确无误，proper 强调符合规范或礼节、更正式，fitting 强调与特定场合相称、书面语色彩更浓。这里不比较 right 的“右方的”方向义，也不比较 correct 用作动词“纠正”的用法。

Compared meaning: to make something correct (verb).

比较义项：改正，纠正（动词）。

• correct 本词

  The everyday, neutral word for fixing an error; used in casual and formal contexts alike, often for small mistakes like spelling or grammar.

  最普通、中性的用词，用于口语和书面语都很常见，常指改正拼写、语法等较小的错误。

  Please correct the spelling mistakes before you submit your homework.

  请在提交作业之前改正拼写错误。

• rectify

  A formal, often bureaucratic word for fixing something wrong, typically a serious error, injustice, or systemic problem; rarely used in casual speech.

  较为正式、常带公文色彩的用词，通常指纠正比较严重的错误、不公或系统性问题；在日常口语中很少使用。

  The company issued an apology and vowed to rectify the situation immediately.

  公司发表了道歉声明，并承诺立即纠正这一状况。

Correct and rectify both mean to fix something wrong. Correct is the everyday, neutral word, used for small mistakes like spelling. Rectify is more formal, often bureaucratic, used for serious errors or injustice, rarely in casual speech.

两词都指把错误的事物变得正确，correct 是最通用、最常见的说法，几乎可用于任何场合；rectify 更正式，多用于书面语或正式场合，常搭配错误、问题、不公等较严重或系统性的事物。