Dish me up Latinate ten? Such is X!

• Third from last
• Of the third syllable from the end
• Like X in the alphabet
• Third from the end
• The 3rd syllable of a word counting back from the end

The Collaborative International Dictionary Word definitions in The Collaborative International Dictionary
Antepenultimate \An`te*pe*nult"i*mate\, a. Of or pertaining to the last syllable but two. -- n. The antepenult.

Wiktionary Word definitions in Wiktionary
a. Two before the last, i.e., the one immediately before the penultimate, in a series. n. 1 Two before the last in a series. e.g. (..., antepenultimate, penultimate, ultimate) 2 The syllable that comes two before the last in a word.

WordNet Word definitions in WordNet
adj. third from last n. the 3rd syllable of a word counting back from the end [syn: antepenult ]

Douglas Harper's Etymology Dictionary Word definitions in Douglas Harper's Etymology Dictionary
"the last but two," 1730, from antepenult (n.), 1610s, abbreviation of Latin antepaenultima (syllaba) , fem. of antepaenultimus , from ante "before" (see ante ) + paenultima , from paen "almost" + ultima "last" (see ultimate ).