Did you know?

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

tuck in - 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
Word Forms
present tense
I/you/we/theytuck in
he/she/ittucks in
present participletucking in
past tensetucked in
past participletucked in
  1. 1

    tuck in


    tuck up

    [transitive] to put a child into bed and make sure that they are warm and comfortable by covering them well

    I’ll be upstairs soon to tuck you in.

  2. 2
    [intransitive] British informal to eat food with enthusiasm because you like it or because you are hungry

    Everybody tuck in before it gets cold!

  3. 3
    to put the end of something such as a piece of clothing under or behind another piece in order to make it tidy

    You can wear it loose or tucked in with a belt.

See also main entry: tuck


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