收錄 CEFR 分級、易錯點、文法句型；一字多義一次看完。
詢問
to ask questions in order to get information, especially in a polite or official situation
Mayumi inquired about the train schedule at the front desk before buying her ticket.
Mayumi 在買車票之前，先到櫃檯詢問火車時刻表。
調查
to officially examine all the facts about a problem, crime, or accident in order to find out what really happened
The government appointed a special committee to inquire into the causes of the factory explosion.
政府任命了一個特別委員會來調查工廠爆炸的原因。
思索；好奇
to reflect on something in your mind because you really want to understand it or find an answer
Ignacio inquired of himself whether he had made the right choice by leaving his job.
Ignacio 捫心自問，離開工作崗位是否做出了正確的選擇。
to cause something to happen or start, especially a reaction, a change, or a series of related events
to take something away from a person or place, often without asking for permission first
used to introduce a clause about a future situation that you are getting ready for, so you will have what you need by then.
to carry out an act that is against the law or that society considers morally wrong
to carry out an activity or process that needs planning and organization, such as a test, interview, or meeting
to go to the place where the speaker is, or to go somewhere together with the speaker
a set of actions or steps that you follow in order to complete a particular task or reach a goal
to believe something is likely to happen or be true, based on the information you have
A formal arrangement between two or more people or groups in which each side agrees to do something for the other, often related to business or money.
to try to make people interested in something so that they will buy it, use it, support it, or help it grow
available to be used because it exists in addition to what is normally needed, or because no one is using it at the moment.
a time when someone is away from school, work, or another place where they should be, or the fact that they are away.
從 A 到 Z 與其他字首探索所有公開的字典詞條。
依本站的 CEFR／學習難度分級探索字典；同一個字的不同義項可能分屬多個程度。
WORD UP 字典是一本為中文使用者編寫的英漢學習字典。
很多字典常常在中文翻譯只保留了簡短的翻譯文字，但是英英字典通常都會有一句完整的敘述，來說明一個單字的意思。而中文字典的簡短翻譯，就會常常造成用字不精確的問題發生，WORD UP 字典除了簡短的翻譯，也保留了一段完整的中文說明，來更好地表達該單字的意思。
字附 CEFR 分級（A1 到 C2），一眼看出這個字是不是你現在該學的；KK 與 IPA 兩套音標，唸得出來才記得住；實境例句配中文翻譯，看得到這個字真正怎麼用；同義詞與反義詞，一次把相關的字一起擴充；常見搭配詞，知道這個字習慣跟哪些字一起出現；還有台灣學習者最常犯的錯誤。動詞標注及物與不及物和常見句型，名詞標注可數與不可數。
不管你在準備會考、學測、多益、雅思，還是工作上臨時要查一個字，WORD UP 字典讓你不止看得懂意思，也學得會怎麼用。