14 letters · 17 points in Scrabble
noun the act of intervening for the purpose of bringing about a settlement
originEtymology tree English intermediate Proto-Indo-European *-tis Proto-Indo-European *-Hō Proto-Indo-European *-tiHō Proto-Italic *-tiō Latin -tiō Latin -ātiōlbor. Old French -ationbor. Middle English -acioun English -ation English -ion English intermediation From intermediate (verb) + -ion.
Etymology from Wiktionary, CC BY-SA 3.0