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clamming up

ADJECTIVE
close
Synonyms
STRONG
hidden private retired secluded
WEAK
buttoned-up buttoning one's lip close-lipped closemouthed hush-hush mum's the word reticent secretive silent taciturn tight chops tight-lipped uncommunicative unforthcoming zipping one's lips
Antonyms
STRONG
gossipy indiscreet open
WEAK
public

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

It’s not clear whether Mor was lying or simply spoke without Belkin’s authorization and is clamming up now.

From The Verge • Apr. 27, 2022

Investigators said those who were clamming up included the bride, KPRC-TV reported.

From Fox News • Aug. 22, 2020

Are you clamming up when dates ask questions?

From Slate • May 14, 2019

He learned to skirt attention by clamming up.

From New York Times • Aug. 22, 2011

Mom totally shuts down, clamming up and falling silent.

From "Dry" by Neal Shusterman and Jarrod Shusterman