"penultimate" in the noun sense
1. penult, penultima, penultimate
the next to last syllable in a word
"penultimate" in the adjective sense
1. penultimate, next-to-last
second last
"the author inadvertently reveals the murderer in the penultimate chapter"
"the figures in the next-to-last column"
Source: WordNet® (An amazing lexical database of English)
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