Did you know?

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

go under - 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.

phrasal verb [intransitive]
Word Forms
present tense
I/you/we/theygo under
he/she/itgoes under
present participlegoing under
past tensewent under
past participlegone under
  1. 1
    to sink below the surface of the water

    The crowd watched as the ship went slowly under.

  2. 2
    if something such as a business goes under, it fails completely and stops operating

    Is the British film industry going under?

  3. 3
    to become unconscious when a doctor gives you an anaesthetic before an operation
See also main entry: go


to manipulate someone psychologically so that they begin to question their own perceptions and memories

BuzzWord Article

Open Dictionary

Dunning-Kruger effect

the phenomenon by which an incompetent person is too incompetent to understand his own incompetence

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