Did you know?

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

senior - definition and synonyms

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.

Thesaurus diagram

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     senior pronunciation in British English
  1. 1
    with a high rank or position
    1. a.
      with a rank or position that is higher than someone else’s
      senior to:

      There are only two posts that are senior to mine.

  2. 2
    [only before noun] older

    Only senior students can leave the premises at lunchtime.

    1. b.


      mainly American used after someone’s name to refer to the older of two people with the same name in the same family

      the career of Douglas Fairbanks Senior


Open Dictionary

snap election

a general election … that is called earlier than expected

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
Macmillan learn live love play