also, and originally commentor, late 14c., "author, writer of commentaries," from Medieval Latin commentor and Old French commentour, agent nouns; see comment (v.). Form in -er attested from 1630s. From 1889 as "one who makes remarks about actions, opinions, etc."
mid-14c., "a chronicler, one who makes a compilation," from Anglo-French compilour, Old French compileur "author, chronicler," from Latin compilatorem, agent noun from compilare (see compile). Another form of the word current in Middle and early Modern English was compilator "a plagiarist; a compiler" (c. 1400), directly from Latin.
1954, an invented word by English author J.R.R. Tolkien in his Elvish language for a hard, light, precious silver metal. It first appears in "Fellowship of the Ring;" it was not in the original "The Hobbit" (1937), but was added in the revisions in the third edition (1966).
"false name," especially a fictitious name assumed by an author to conceal identity, 1828, in part a back-formation from pseudonymous, in part from German pseudonym and French pseudonyme (adj.), from Greek pseudōnymos "having a false name, under a false name," from pseudēs "false" (see pseudo-) + onyma, Aeolic dialectal variant of onoma "name" (from PIE root *no-men- "name").
"Possibly a dictionary word" at first [Barnhart]. Fowler calls it "a queer out-of-the-way term for an everyday thing." Properly in reference to made-up names; the name of an actual author or person of reputation affixed to a work he or she did not write is an allonym. An author's actual name affixed to his or her own work is an autonym (1867). Related: Pseudonymity.
"one who makes known events, deeds, etc., " mid-15c., agent noun from obsolete verb revelate "reveal" (1510s), from Latin revelatus, past participle of revelare (see reveal). "Rare and objectionable" [Century Dictionary]. As a title in the Mormon church, by 1850. John the Revelator for the author of the Biblical book of Revelation is by 1650s.