Source : Webster's Revised Unabridged Dictionary (1913)

Conciliative \Con*cil"i*a*tive\, a.
   Conciliatory. --Coleridge.

Source : WordNet®

conciliative
     adj : overcoming animosity or hostility; "spoke in a conciliating
           tone"; "a conciliatory visit" [syn: {conciliatory}]
           [ant: {antagonistic}]