3 Indo-Europeanists are divided on whether to reconstruct this word as "*nom(e)n-" or as "*", with a preceding "laryngeal". See Delamarre 2003:50 for a summary of views, with references. The "o" timbre of the root is assured by, among others, Greek "ónoma" and Latin "nōmen" (with secondary vowel lengthening). As roots with inherent "o" are uncommon in Indo-European, most roots having "e" as their vowel, the underlying root is probably "*nem-". The "-(e)n" is an affixal particle. Whether the "e" placed in parentheses is inherently part of the word is disputed but probable.