clam up

verb

Definition of clam up

: to become silent
  • clammed up and refused to talk

Examples of clam up in a Sentence

  1. the little girl clammed up when the doctor came into the room

First Known Use of clam up

1916

clam up Synonyms

Antonyms

speak, talk;

Phrases

hold one's tongue (or hold one's peace);



Seen and Heard

What made you want to look up clam up? Please tell us where you read or heard it (including the quote, if possible).

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

WORD OF THE DAY

investment of mental or emotional energy

Get Word of the Day daily email!

Test Your Vocabulary

Odd Habits and Quirks Quiz

  • image1926873504
  • Which of the following best describes an easily irritated person?
True or False

Test your knowledge - and maybe learn something along the way.

TAKE THE QUIZ
Word Winder's CrossWinder

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!