Did you know?

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

fill in

 - definition
Close

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.

Close

Thesaurus

The thesaurus of synonyms and related words is fully integrated into the dictionary entries. Click on the T button in an entry to review the synonyms and related words for that meaning.

more
phrasal verb
Word Forms
Close
present tense
I/you/we/theyfill in
he/she/itfills in
present participlefilling in
past tensefilled in
past participlefilled in

Related dictionary definitions

  1. 1
    [transitive] to add information such as your name or address in the empty spaces on an official document

    Please fill in your name and address in the space provided.

    I spent over two hours filling in the application form.

    Fill in the missing words.

    fill in the blanks (=to give or learn information that is needed in order to understand something properly):

    We know roughly how the system works, but Brian is here to fill in the blanks.

  2. 2
    [transitive] same as fill1 (sense 3)

    The canal is now disused and partly filled in.

  3. 3
    [transitive] fill someone in informal to give someone details about something

    Did Sam fill you in about the new project?

    My secretary will fill you in on the details.

  4. 4
    [intransitive] to do someone's job for them while they are away
    fill in for:

    I'm filling in for the receptionist at the moment.

See also main entry: fill

property porn

a type of television programme, magazine article, etc which shows off desirable homes …

BuzzWord Article

Word of the Day

slay

to kill someone in a violent way

Open Dictionary

flat design

a type of design used on the web which excludes features which give a three-dimensional effect … and uses simple styles

add a word

Blog

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