Synonyms and related words :
abide, be mute, be silent, be still, coast, forswear speech, freeze, keep mum, keep silent, keep still, lie still, make no sign, mark time, not breathe, not stir, play dumb, remain, remain motionless, repose, rest, say nothing, shut up, stand, stand fast, stand firm, stand mute, stand still, stay, stay put, stick, stick fast, tarry, tread water