- anniversary
- early 13c., from L. anniversarius "returning annually," from annus (gen. anni) "year" (see annual) + versus, pp. of vertere "to turn" (see versus). The adj. came to be used as a noun in Church L. as anniversaria (dies) in ref. to saints' days.
- birthday
- O.E., "anniversary celebration of someone's birth" (usually a king or saint at first), from birth + day. Meaning "day on which one is born" is from 1580. Birthnight is attested from 1628; birthplace is from 1607.
- guy (2)
- "fellow," 1847, originally Amer.Eng.; earlier (1836) "grotesquely or poorly dressed person," originally (1806) "effigy of Guy Fawkes," leader of the Gunpowder Plot to blow up British king and Parliament (Nov. 5, 1605), paraded through the streets by children on the anniversary of the conspiracy. The male proper name is from Fr., related to It. Guido, lit. "leader," of Gmc. origin (see guide).