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90% of the time, speakers of English use just 7,500 words in speech and writing. These words appear in red, and are graded with stars. One-star words are frequent, two-star words are more frequent, and three-star words are the most frequent.



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verb [transitive] British English pronunciation: research /rɪˈsɜː(r)tʃ/ British English pronunciation: research /ˈriːsɜː(r)tʃ/ 
Word Forms
present tense
present participleresearching
past tenseresearched
past participleresearched
  1. 1
    to make a detailed study of something in order to discover new facts

    They have been researching the effects of the drug on mice.

    The subject has not been fully researched before.

  2. 2
    to find information about a subject for a book, film, television programme etc

    The documentary was rigorously researched and intelligently presented.

dark pool

a method of financial trading in which share prices are hidden and not openly available to the public

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an extra sail sometimes fitted on the front of a boat used for racing

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to post a tweet, usually a negative one, that mentions a person without using the @ sign, so that they will not see the message on their Twitter feed …

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