1. third from the end; coming before the penultimate item in a sequence

1. the third item from the end in a sequence or series
Usage: often used in linguistics to refer to the antepenultimate syllable of a word

Examples

• In the word 'photography,' the antepenultimate syllable is 'tog.'
• The antepenultimate chapter of the novel sets up the final conflict.
• She finished in the antepenultimate position in the race.
• The antepenultimate paragraph contains the key evidence.
• On the antepenultimate day of the month, they made their decision.
• The antepenultimate item on the list was overlooked by most readers.