tranquil
Cross references: 1. calm tran.quil \'tran-kw*l, 'tran-\ \-kw*-le-\ aj or tran.quil.er or tran.quil.ler; or tran.quil.est; or tran.quil.lest [L tranquillus] 1a: free from agitation : SERENE 1b: free from disturbance or turmoil : QUIET 2: STEADY, STABLE - tran.quil.ly av