clam up Definition

be quiet, shut up, belt up, button up, dummy up, keep mum, close up, pipe down, silent, quiet down, silence, silentiary, make noise, blurt out, whisperingly, taciturnly, shout down, rattle off, sound out, loss of consciousness, sourdine, put to sleep, acquiet, hush, drown out, hue and cry, wherret, stirless, express emotion, hushaby, talk down, quiet, lie low, respeak, blow over, concentrate on, chicken out, nod off, hang back, sedent, express joy, deaf person, whisper, mumchance, instop, whistly, keep down, stand back, dulciloquy, bemuffle, downsitting, ring out, reposure, pipe up, doze off, somniloquist, logophobia, remurmur, consopite, burst out, while away, inquiet, take heed, go to bed, catch cold, unmuffle, bewake, go to sleep, susurrant, take it easy, reel off, subvocalize, keep back, dentiloquy, take to heart, somniloquence, interclude, mess around, quietage, drift off, stultiloquence, sober up, umbe, upstare, jactitation, museful, pick at, somniloquism, tell on, give ear, breathe out, overstare, scopophobia, sleep off, insusurration, lalophobia, undercry, smilet, jactation, sotto voce,