Relating to or being the third from the end; coming immediately before the penultimate.
From Latin 'ante' (before) + 'penultimate' (second from last). Literally 'before the second-to-last,' creating a sequence of last, penultimate, antepenultimate.
Words with antepenultimate stress are actually quite common—'photograph,' 'personality,' and 'university' all stress their third-to-last syllables, which is unusual compared to Germanic languages.
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