What's the "een" in Halloween?
1640s, from Middle French origination (15c.), from Latin originationem (nominative originatio), from originem (see original (adj.)).
1650s, probably a back-formation of origination. In earliest reference it meant "to trace the origin of;" meaning "to bring into existence" is from 1650s; intransitive sense of "to come into existence" is from 1775. Related: Originated; originating.
originate o·rig·i·nate (ə-rĭj'ə-nāt')
v. o·rig·i·nat·ed, o·rig·i·nat·ing, o·rig·i·nates
To bring into being; create.
To come into being; start.