1.Longman Dictionary of Contemporary English Online
The Longman Dictionary of Contemporary English Online, which is the online version of the Longman Dictionary of Contemporary English, Updated Edition, is available for free use online and will come in handy when you need to look up a word or phrase while learning English on the Internet.
Features:
- Informative entries with IPA phonetic transcripts, concise definitions and typical examples of use
- Coverage of both British and American English
- Color illustrations, which can be viewed in full size
- Link to special resources with worksheets for teachers and activities for students
2. Oxford Dictionary
This dictionary is mainly used by students and learners, however it can be used by anyone. It is easy to use and contains both British and American English. Some of the features include pictures (which really comes in handy for better understanding and elaboration of things), synonyms, example sentences and others. It’s amongst one of the oldest, most used and trusted online dictionary. This dictionary can come in handy when writing a research paper or a thesis for clarification purposes and understanding words better.
Merriam-Webster Dictionary
This is one of the most accurate online dictionaries. Although not commonly known, it has one of the highest most credible information. The definition of its words are of high pedigree. Although it does not contain much features compared to the other dictionaries, it has pronunciation, grammar tips, synonyms, thesaurus, medical dictionary and Spanish to English translation. Although you can get all the help online, it still can work offline.
4.Macmillan Dictionary
This is a reference dictionary for all English speaking people. It is free and provides online thesaurus that is fully integrated and consists of synonyms and related words. The thesaurus contains dictionary entries integrated under it. The best online dictionary to learn something new every day. With its synonym feature, a user can learn new term on different words that are featured on the dictionary. It also does contain a physical dictionary. Its main users comprises of learners and people in official setting.
5. Cambridge Dictionary
This is amongst one of the most respected dictionaries around. It can be used by learners and even people who are looking for definition of casual words. The online version is made up of different dictionaries functions and its website is very wide. The online versions include International Dictionary of Idioms, the Cambridge Dictionary of American English, the Cambridge International Dictionary of Phrasal Verbs and the Cambridge Learners Dictionary. Some of the online features include thesaurus, pronunciation, translation, phrasal verbs, idioms and others. It’s one of the most serious dictionaries mainly used for official and academic purposes.