Adjective penultimate has 1 sense
  1. penultimate, next-to-last - next to the last; "the author inadvertently reveals the murderer in the penultimate chapter"; "the figures in the next-to-last column"
    Antonym: intermediate (indirect, via first, last)
    Antonym: first (indirect, via last, intermediate)
,Noun penultimate has 1 sense
  1. penult, penultima, penultimate - the next to last syllable in a word
    --1 is a kind of syllable
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