remain silent
- hushAbsence of sound
- muteWithout voice or sound
- quietLacking in sound
- speechlessUnable to talk
- tight-lippedUnwilling to divulge
secretive · withhold · suppress · bite tongue · stone-faced · wordless · unspoken · voiceless · still · pause · hold back · keep mum · clam up · zip it · sworn · oath · confession · interrogation
vocalization and communication
remain silentspeak up
Talk louder or opine
speak out · speak · break silence · talk · vocalize
disclosure and transparency
remain silentconfess
Acknowledge wrongdoing openly
disclose · tell all · come clean · reveal · divulge
action and passivity
remain silenttake a stand
Publicly commit to a position
protest · object · intervene · speak one's mind · raise one's voice