Examples from the Web for antepenultimate
On that place, if it be on the penultimate or antepenultimate, the accent should be laid in English.
Even when the stress falls on this antepenultimate i, it is short in English speech.
It need hardly be said that 'tea-houses' like 'grandfathers' has the stress on the antepenultimate.
It lies between the penultimate and antepenultimate pair of legs.The Works of Francis Maitland Balfour, Volume 1|Francis Maitland Balfour
Only six thousand pounds now required for the great ultimate, or penultimate, or antepenultimate effort.Ireland as It Is|Robert John Buckley (AKA R.J.B.)
British Dictionary definitions for antepenultimate
Word Origin and History for antepenultimate
"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).