Thesaurus.com
Dictionary.com
Showing results for clammed up.

clammed up

ADJECTIVE
closemouthed
Synonyms
WEAK
buttoned-up close close-lipped dummied up have tight chops hush-hush quiet reticent sedate taciturn tight-lipped uncommunicative zipped one's lips
Antonyms
WEAK
chatty open talkative
ADJECTIVE
hushed
Synonyms
STRONGEST
muted
STRONG
checked close curbed faint hush iced inhibited mute
WEAK
bashful buttoned-up closed-up closemouthed dumb dummied up inarticulate incoherent inconversable indistinct laconic mousy mum noiseless nonvocal not talkativ
Antonyms
STRONG
bold
ADJECTIVE
incommunicable
Synonyms
WEAK
aloof antisocial brooding close close-mouthed cold curt distant dour dried-up dumb incommunicative laconic mum mute quiet reserved reticent sententious silent sparing speechless tight-lipped tightlipped uncommunicable uncommunicative unexpressive unforthcoming withdrawn
ADJECTIVE
incommunicative
Synonyms
STRONG
uncommunicative
WEAK
aloof antisocial brooding close close-mouthed cold curt distant dour dried-up dumb incommunicable laconic mum mute quiet reserved reticent sententious silent sparing speechless tight-lipped tightlipped uncommunicable unexpressive unforthcoming withdrawn
ADJECTIVE
inobtrusive
Synonyms
WEAK
buttoned-up close close-mouthed could hear a pin drop dumb hushed hushful inaudible low low-pitched muffled mute muted noiseless not saying boo peaceful quiescent quieted reserved restrained reticent secretive silent soft soundless speechless still stilled subdued taciturn tasteful tight-lipped uncommunicative unexpressed unobtrusive unspeaking unuttered whist
ADJECTIVE
mum
Synonyms
STRONGEST
bashful
STRONG
mute quiet shy still
WEAK
buttoned-up closemouthed hushed muted nonvocal not forthcoming not talkative reserved secretive soundless speechless tight-lipped tongue-tied uncommunicative unsociable unspeaking voiceless wordless zipped
Antonyms
STRONG
agitated
ADJECTIVE
noncommittal
Synonyms
STRONGEST
ambiguous careful cautious circumspect discreet equivocal evasive judicious neutral tactful vague wary
WEAK
buttoned-up constrained even-steven guarded hush-hush incommunicable indefinite middle-of-the-road on-the-fence politic reserved restrained temporizing tentative unrevealing zipped
Antonyms
STRONGEST
careless certain clear decisive definite foolish hasty heedless incautious indiscreet positive rash reckless sure
WEAK
willing
ADJECTIVE
quiet
Synonyms
STRONGEST
muted peaceful reticent silent soft
STRONG
close hushed low muffled mute quieted reserved still stilled whist
WEAK
buttoned-up close-mouthed could hear a pin drop dumb hushful inaudible low-pitched noiseless not saying boo quiescent secretive soundless speechless taciturn tight-lipped uncommunicative unexpressed unspeaking unuttered
Antonyms
STRONGEST
clamorous communicative noisy
STRONG
unreserved
WEAK
agitated boisterous complex complicated intricate loud obtrusive troubled
ADJECTIVE
reticent
Synonyms
STRONGEST
bashful hesitant mum reserved restrained shy silent taciturn
WEAK
close close-mouthed dried-up dummied up tight-lipped uncommunicative unforthcoming unspeaking uptight
Antonyms
STRONGEST
communicative confident extroverted outgoing talkative unreserved unshy
WEAK
forward unrestrained
ADJECTIVE
secretive
Synonyms
STRONGEST
covert enigmatic reticent taciturn
WEAK
backstairs buttoned-up cagey close close-mouthed cryptic feline furtive hushed in chambers in privacy in private in the background in the dark on the Q.T. reserved silent tight-lipped undercover unforthcoming withdrawn zipped
Antonyms
STRONGEST
communicative
WEAK
forthright honest open
ADJECTIVE
silent
Synonyms
STRONGEST
hushed mum mute restrained reticent
WEAK
bashful buttoned-up checked close closed-up closemouthed curbed dumb dummied up faint hush iced inarticulate incoherent inconversable indistinct inhibited laconic mousy muted noiseless nonvocal not talkative reserved shy silentious soundless still struck dumb taciturn tongue-tied unclear uncommunicative unheard unsociable unspeaking voiceless wordless zipped
Antonyms
WEAK
clamorous communicative explicit noisy talkative tangible
ADJECTIVE
speechless
Synonyms
STRONGEST
amazed dazed dumb silent
WEAK
aghast aphonic astounded buttoned-up close-mouthed cool cool as cucumber dumbfounded dumbstruck inarticulate mum mute not saying boo reserved shocked taciturn thunderstruck tight-lipped tongue-tied uncommunicative unflappable voiceless wordless
Antonyms
WEAK
articulate communicative responsive
ADJECTIVE
still
Synonyms
STRONG
closed fixed halcyon hushed pacific sealed smooth stable static stock-still whist
WEAK
at rest buttoned-up close-mouthed dead deathlike deathly deathly quiet deathly still hushful inert lifeless noiseless peaceful placid restful serene silent soundless stagnant stationary tranquil undisturbed unruffled unstirring untroubled
Antonyms
STRONG
broken changeable unfixed variable
WEAK
agitated moving stirred unquiet
ADJECTIVE
taciturn
Synonyms
STRONGEST
aloof dour laconic reticent
WEAK
antisocial brooding close close-mouthed cold curt distant dried-up dumb mum mute quiet reserved sententious silent sparing speechless tight-lipped unexpressive unforthcoming withdrawn
Antonyms
WEAK
communicative fluent talkative wordy
ADJECTIVE
tight-lipped
Synonyms
WEAK
buttoned-up closemouthed dumb hushed mum mute muted not talkative quiet reserved restrained reticent secretive taciturn tongue-tied zipped
ADJECTIVE
tightlipped
Synonyms
STRONGEST
aloof dour mum reticent silent
WEAK
antisocial brooding close close-mouthed cold curt distant dried-up dumb incommunicable incommunicative laconic mute quiet reserved sententious sparing speechless tight-lipped uncommunicable uncommunicative unexpressive unforthcoming withdrawn
Antonyms
STRONGEST
communicative
ADJECTIVE
uncommunicable
Synonyms
WEAK
aloof antisocial brooding close close-mouthed cold curt distant dour dried-up dumb incommunicable incommunicative laconic mum mute quiet reserved reticent sententious silent sparing speechless tight-lipped tightlipped uncommunicative unexpressive unforthcoming withdrawn
ADJECTIVE
uncommunicative
Synonyms
WEAK
aloof buttoned-up close close-mouthed curt distant dried-up evasive guarded hush-hush offish on the Q.T. quiet reserved reticent retiring secretive short standoffish taciturn tight-lipped unapproachable unresponsive unsociable
Antonyms
WEAK
communicative confident extroverted responsive

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.

Normally so open in his media conferences, Amorim clammed up when he was asked to explain something he said on Christmas Eve about his preferred style of play.

From BBC • Jan. 3, 2026

However, he clammed up when Welker asked him to share other methods in which he might stay on.

From Salon • Mar. 30, 2025

In the 2½ years since, North Korea has basically clammed up again.

From Washington Post • Sep. 8, 2021

“I completely clammed up with Jon Hamm because I’ve watched every season of Mad Men, like twice,” Cooper says.

From The Verge • Dec. 18, 2020

The Rusty Raptors all clammed up accordingly, eyes wide.

From "Dactyl Hill Squad" by Daniel José Older