A dictionary is one of the essential tools that students need when they write an essay. Dictionaries can be used to find the meaning of the words or to check the spelling of the words that you are using. If you write an essay in class, your professor may allow you to bring a dictionary. But if you write an essay assignment at home, online dictionaries are the best choice. You don’t need to open and flip through the pages every time you want to check the spelling or double-check the meaning of a word.

Here is a list of best online dictionaries that you can use online.

1. Dictionary.com

Dictionary.com is one of the best online dictionaries for English. It provides English definitions, synonyms, word origins, audio pronunciations, example, slang phrases, idioms and so much more. If you are looking for word synonyms, thesaurus.com is a way to go. Thesaurus.com is also part of dictionary.com.

2. Merriam-Webster.com

Merriam-Webster has been around since 1828 and becomes the first trusted provider of language information. It provides the most accurate in defining word meanings and finding synonyms, word usage, and grammar. You will be surprised how much you will know if you visit Merriam-Webster.com to learn new words every day.

3. Cambridge Dictionary

Cambridge dictionary has been around online since 1999. It is brought by Cambridge University Press. It has more than 1.5 billion words of real English. Whether you want to find the meaning of a word you encounter or translate a new word, Cambridge dictionary is worth to try.

4. Oxford English Dictionary

Oxford English Dictionary is brought by Oxford University Press. It has more than six hundred thousand words and three million quotations. It will keep you updated every three months. Oxford English Dictionary is a great dictionary to help you with learning new English words.

5. The Free Dictionary.com

TheFreeDictionary.com is another popular free dictionary that is worth to use to find the meaning of a word. It is provided by Farlex, Inc, a private company based in Huntingdon Valley, PA. It provides the most comprehensive information about English words and other languages. Another online reference owned by Farlex, Inc are TheFreeLibrary.com which offers classic literary works that you can use for reference information and Definition-Of.com which provides Online Community Dictionary.

6. Google Translate

Google Translate is part of Google products. It provides translation for more than 100 foreign languages. It is used to define the meaning of a word, check spelling, also to find a usage of a given the word in a sentence. You can also type a word such as “dictionary definition” of Google search to find the meaning of a word.

7. Collinsdictionary.com

Collinsdictionary.com is one of the best for English or bilingual word reference. It has been in dictionary publishing business since 1819. It has more than 722 thousands of words, meanings, and phrases. You can also access it on your mobile phone by downloading their app.

A dictionary is a must-have tool for students to help with writing an assignment or understanding the words that are not familiar with.