1) Last but one 2) Next to the last 3) Next to the last syllable 4) Penultima 5) Penultimate 6) Syllable 7) Syllable before the last 1) Penultima 
A penult (short for penultimate) is the next to the last item in a series. The commonest use of the word is in linguistics, where the word `penult` usually means the second to last syllable of a word. The penult follows the antepenult and precedes the ultima. For example, the main stress falls on the penult in such English words as banána, and .....
• (n.) The last syllable but one of a word; the syllable preceding the final one.
Pe'nult noun [ Abbreviated from penultima .] (Gram. & Pros.) The last syllable but one of a word; the syllable preceding the final one. 
[n] - the next to last syllable in a word
penult, penultima The second to the last item in a series of things, especially the second to the last syllable of a word [from Latin paene, 'almost' + ultimus, 'last'].
penultima noun the next to last syllable in a word