Crossword clues for ___ up (be silent) 4 letters:LURKSit silently in chat roomsOLGARussian-born silents starlet BaclanovaDERNActor Bruce of "Silent Running"LAWS___ are silent in times of war: CiceroKOPSSilent filmdom's Keystone ___SANS_____ mot dire (silently, on the Seine)NODSSilent auction bids?NODSSilent assentsPOLASilents actress NegriCLAMSilent typeNITASilents acress NaldiPOLASilents star NegriMIMESilent copierMAESSilent-film actresses Marsh and MurrayNODSSilent yesesMIMESilent playerPOLANegri of silentsLILASilents actress LeeGISHDebut album from the Smashing Pumpkins named after silent actress LillianHOLYSilent night, ___ night...MUTEMake a silent movie?NITANaldi of silentsDERNSilent Running actorDERNSilent Running starBARASilents' siren ThedaNODSSignals silentlyABAD___ Game (1913, silent movie)LUPESilent star, VelezGISHSilents star LillianMIMESilent entertainerBARASilents star ThedaMIMESilent performerDOURSilently ill-humoredGISHLillian or Dorothy of the silentsMIMESilent actMIMESilent typePOLASilents vamp, NegriMIMECertain silent performerDERNSilent Running actor BruceBARATheda of silentsBARASilents sirenSIGNTalk silentlyPOLANegri of the silentsMARSSetting of the sci-fi story "Out of the Silent Planet"NODSSilently approvesBARAVampy silent star ThedaNOELSilent Night e.g.MIMESilent actorEMILSilents star JanningsHOLAGreeting that starts silently