- quieten
- quiet, quietenAs a verb, quiet has been used transitively (with an object) since the 16c in the meaning ‘to make (someone or something) quiet’, and is still in use in this sense:
• The unexpectedness of this departure from the routine at first disquieted but then quieted us all —M. Lindvall, 1991.
Since the 18c, and especially in North America, it has also been used intransitively (often in extended meanings to do more with disposition and temperament than actual sound):• When I switched to opiates at least I quieted down —New Yorker, 1992.
The alternative verb quieten appeared (often with down) in the 19c in both transitive and intransitive uses; because quiet was available, it was regarded by Fowler (1926) as a ‘superfluous word’, but in more recent usage the stigma has mostly disappeared, leaving quieten now the more common choice than quiet:• The youth…revved the engine, then quietened it down to the soft ticking-over —J. Wainwright, 1973
• Arnica also helps to calm and quieten the upset child —Health Shopper, 1990
• It's not so much that I've quietened down, as that I've channelled my energies into things that are more productive than out-and-out hedonism —Female First Online, BrE 2005 [OEC].
Modern English usage. 2014.