Crossword clues for ___ up (be silent) 4 letters:HOLAGreeting that starts silentlyDERNActor Bruce of "Silent Running"LURKSit silently in chat roomsSANS_____ mot dire (silently, on the Seine)OLGARussian-born silents starlet BaclanovaBARATheda of silentsNODSSilent assentsLAWS___ are silent in times of war: CiceroSIGNTalk silentlyNODSSignals silentlyMAESSilent-film actresses Marsh and MurrayMIMESilent entertainerPOLASilents star NegriMIMESilent playerMIMESilent typeDERNSilent Running actorPOLANegri of silentsMARSSetting of the sci-fi story "Out of the Silent Planet"POLASilents actress NegriCLAMSilent typeNITANaldi of silentsNITASilents acress NaldiDERNSilent Running starBARASilents' siren ThedaNODSSilent auction bids?ABAD___ Game (1913, silent movie)LUPESilent star, VelezMIMESilent copierGISHSilents star LillianBARASilents star ThedaNODSSilent yesesDOURSilently ill-humoredGISHLillian or Dorothy of the silentsMIMESilent actMIMECertain silent performerPOLASilents vamp, NegriLILASilents actress LeeDERNSilent Running actor BruceBARASilents sirenGISHDebut album from the Smashing Pumpkins named after silent actress LillianHOLYSilent night, ___ night...POLANegri of the silentsMUTEMake a silent movie?NODSSilently approvesBARAVampy silent star ThedaNOELSilent Night e.g.MIMESilent actorEMILSilents star JanningsMIMESilent performerLOSTLike most American silent-era films