Quiet

calmo

(having little motion)

quieto

(with little sound)

quieto

(not talking)

silenzioso

(with little sound)

taciturno

(not talking)

pace

(absence of movement)

silenzio

(absence of sound)

tranquillità

(absence of movement)

calmare

(to cause (someone or something) to become quiet)

placare

(to cause (someone or something) to become quiet)