peaceful   
adana
slow, peaceful, tranquil; grave and prudent in action. Root not used in Imerina. [Mal. Adu, to repose (?).] [Richardson 1885]
bonaika
peaceful, easy-going [Hallanger 1973]
mandry fahaizay
to be peaceful, quiet, etc. Used in speaking of the kingdom at peace. [Richardson 1885]