Mum, adjective. Example: He was keeping mum about his futur | The Thesaurus

Mum, adjective.

Example: He was keeping mum about his future plans.

Synonyms:

1. silent, quiet, mute, dumb, tight-lipped, close-mouthed, uncommunicative, unforthcoming, reticent, secretive
2. (archaic) mumchance
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