From Longman Dictionary of Contemporary Englishquietenqui‧et‧en /ˈkwaɪətn/ British English, quiet American English verb1[intransitive, transitive] (also quieten down British English)LESS to become calmer and less noisy or active, or to make someone or something do thisJaved Miandad appealed for calm, but he failed to quieten the protesters.Quiet down and get ready for bed!Things tend to quieten down after Christmas.2[transitive]FRIGHTENED to reduce a feeling such as fear or worryI managed to quieten her fears.Examples from the Corpusquieten• Her travelling companions had quietened, as if some one in authority had arrived.• I decided to stay where I was at the moment until things quietened down.• It didn't knock her unconscious, but at least it quietened her enough to let me get at Jules.• Cardiff quietenedJimmy with a gesture that meant: Let him talk.• Invent some reason to quieten old NosySalt.• The driver tried to quieten the horses as two screeching cats, fighting over some vermin, scurried out of the shadows.• When one conceals matters, one does not necessarily quieten them.• In an attempt to quieten things down, executiveproducerGeorge Harrison arranged for a press conference in London.