| Main Entry: | close |
| Part of Speech: | adjective |
| Definition: | secret, reserved |
| Synonyms: | buttoning one's lip, buttoning up, clamming up, close-lipped, closemouthed, hidden, hush-hush, mum's the word, on the Q. T., private, reticent, retired, secluded, secretive, silent, taciturn, tight chops, tight-lipped, uncommunicative, unforthcoming, zipping one's lips |
| Antonyms: | open, unreserved |
| Main Entry: | mum's the word |
| Part of Speech: | interjection |
| Definition: | keep quiet |
| Synonyms: | hold your tongue, hush, not another peep, say nothing, shut your mouth |