mid-14c., deifien, "to make god-like;" late 14c., "make a god of, exalt to the rank of a deity," from Old French deifier (13c.), from Late Latin deificare, from deificus "making godlike," from Latin deus "god" (from PIE root *dyeu- "to shine," in derivatives "sky, heaven, god") + -ficare, combining form of facere "to make, do" (from PIE root *dhe- "to set, put"). Sense of "adore, regard as an object worthy of worship" is from 1580s. Related: Deified; deifying.