Synonyms and Antonyms for clam-up

1. clam up (v.)

refuse to talk or stop talking; fall silent

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2. chin-up (n.)

an arm exercise performed by pulling yourself up on a horizontal bar until your chin is level with the bar

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4. clam (v.)

gather clams, by digging in the sand by the ocean

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6. clam (n.)

flesh of either hard-shell or soft-shell clams

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7. up (adv.)

spatially or metaphorically from a lower to a higher position

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8. up (adj.)

being or moving higher in position or greater in some value; being above a former position or level

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9. up (v.)

raise

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10. up (adj.)

getting higher or more vigorous

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