tranquillus [a, um];
lenis [e];
quietus [a, um];
remissus [a, um];
submissus [a, um];
languidus [a, um];
levis [e];
mollis [e];
lentus [a, um];
clemens [ntis];
placidus [a, um] (aqua etc.);
parvus [a, um] (vox, murmur);
tacitus [a, um] (nemus);
taciturnus [a, um] (loca);
+ тихая погода tranquillitas [atis, f];
tranquillum [i, n];