Did you know?

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

hollow - 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.

verb     hollow pronunciation in British English
Word Forms
present tense
present participlehollowing
past tensehollowed
past participlehollowed

phrasal verb

hollow out

Word Forms
present tense
I/you/we/theyhollow out
he/she/ithollows out
present participlehollowing out
past tensehollowed out
past participlehollowed out
  1. 1
    to make a hole in something by removing what is inside it
  2. 2
    to make or build something by making a hole in something

    The amphitheatre had been hollowed out of the steep hillside.

Open Dictionary


a rise in the level of a stream or river

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