Synonyms for Peaceable:

adj.

amicable (adjective)
kind, cordial.
friendly (adjective)
genial, benign, benevolent, tender.
inoffensive (adjective)
friendly.
mild (adjective)
open-minded, lax, meek, liberal, serene, insipid, soft, broad-minded, tolerant, quiet, even, genial, amiable, benign, libertarian, permissive, sweet, kind, benevolent, mild, clement, balmy, forbearing, lenient, moderate, peaceful, tender, cordial, charitable, gentle.
peaceable (adjective)
calm, gentle, peaceful, conciliatory, quiet, tranquil, mild, pacific, peace-loving, pacifist, amiable, irenic.

n.

serene, calm, buckle, compromise, concede, concession, balmy, tranquil, break up, bridge-building, arbitrate, conciliate, call off. friendly, conciliatory. peace, Pacifical, irenic, pacifist, pacifistic. peaceable (noun)
pacific, peaceful, peace-loving.

Other synonyms:

pacifistic, irenic, calm, Pacifical. pacifist. Other relevant words:
peace, calm, serene, concession, Pacifical, pacific, friendly, balmy, compromise, pacifist, conciliate, concede, pacifistic, arbitrate, peace-loving, conciliatory, bridge-building, tranquil, irenic, buckle.

Usage examples for peaceable

  1. " There has been a sort of peaceable revolution," Mr. Hoare said. – A Chapter of Adventures by G. A. Henty
  2. If they act with common humanity and reason, there is no fear but that the apprentices will be peaceable – The Anti-Slavery Examiner, Omnibus by American Anti-Slavery Society
  3. As if they meant: Be peaceable as far as you can; but if it be impossible, then quarrel. – Expositions of Holy Scripture: Romans Corinthians (To II Corinthians, Chap. V) by Alexander Maclaren