Did you know?

Click any word in a definition or example to find the entry for that word


 - definitions and thesaurus

What are red words?

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.



The thesaurus of synonyms and related words is fully integrated into the dictionary. Click on the thesaurus category heading under the button in an entry to see the synonyms and related words for that meaning.

adjective substantial pronunciation in British English /səbˈstænʃ(ə)l/
  1. 1
    large in amount or degree
    The study reveals very substantial differences between population groups.
    The schools have a substantial measure of local autonomy.
    a substantial number/amount/proportion: A substantial number of members have called to complain.
    a substantial increase/reduction/improvement: There has been a substantial increase in inflation.
    1. a.
      used about large amounts of money
      substantial savings/investments
      a substantial sum: Unless the group can raise a substantial sum, they will be in trouble.
      Synonyms and related words
    2. b.
      large and strongly built
      a substantial brick building
      Synonyms and related words
      Synonyms and related words
  2. 2
    important, or real
    His decision was based on nothing more substantial than his dislike of foreigners.
    Synonyms and related words
    1. a.
      dealing with important ideas in a serious way
      The most substantial regional newspaper is Caribbean Contact.
  3. 3
    making you feel full and satisfied
    Do you have anything more substantial than these pretzels?


used to describe foods which don't contain ingredients such as wheat, dairy products etc …

BuzzWord Article

Open Dictionary

red market

the buying and selling of human organs

add a word


A must for anyone with an interest in the changing face of language. The Macmillan Dictionary blog explores English as it is spoken around the world today.

global English and language change from our blog