"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).
实用例句
1. the antepenultimate item on the agenda
议程的倒数第三项
来自《权威词典》
2. The main stress in'photography'falls on the antepenultimate syllable.