[1] : WordNet (r) 2.0

quieten
     v 1: become quiet or quieter; "the audience fell silent when the
          speaker entered" syn: hush, quiet, quiesce, quiet
          down, pipe down ant: louden
     2: make calm or still; "quiet the dragons of worry and fear"
        syn: calm, calm down, quiet, tranquilize, tranquillize,
         tranquillise, lull, still ant: agitate
     3: cause to be quiet or not talk; "please silence the children
        in the church" syn: hush, silence, still, shut up,
         hush up ant: louden
see also:
hush quiet quiesce quiet down pipe down louden 
calm calm down tranquilize tranquillize tranquillise 
lull still agitate silence shut up 
hush up 

Quieten >> Q Words
Quieten, definition of term: Quieten
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