Sound that was changed in each of the theme entries

Question:

Answer:

LONGI

Length:

Similar Crossword Questions:

Distance forward in the alphabet that each changed letter in the theme entries has moved
Like some fillings (as in this puzzle's theme entries)
Disappearing sound, and a hint to this puzzle's theme
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What each of the five theme entries ends with
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They're hidden in this puzzle's theme entries
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Letterman bit exemplified in the six starred theme entries
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The three in each of this puzzle's theme entries
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What this puzzle's theme entries probably do?
Where the theme entries may be found
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