trankvila

Trankvila is calm in the sense of untroubled, of a person or a sea or an afternoon. Silenta is about the absence of sound, so a noisy party can leave you anything but trankvila while a silenta room does not automatically make you so. The root hands you trankvile for calmly, trankvileco for calmness, trankviligi for to soothe someone, and maltrankvila for anxious - which turns out to be the most useful of the lot.