QUIETEN
hush, quieten, silence, still, shut up, hush up
(verb) cause to be quiet or not talk; “Please silence the children in the church!”
calm, calm down, quiet, tranquilize, tranquillize, tranquillise, quieten, lull, still
(verb) make calm or still; “quiet the dragons of worry and fear”
quieten, hush, quiet, quiesce, quiet down, pipe down
(verb) become quiet or quieter; “The audience fell silent when the speaker entered”
Source: WordNet® 3.1
Etymology
Verb
quieten (third-person singular simple present quietens, present participle quietening, simple past and past participle quietened)
(transitive) To make quiet.
(intransitive) To become quiet.
Usage notes
• Not very common in US English, where the verb quiet is often preferred.
Anagrams
• queen it
Source: Wiktionary