In total, how many words are available using the combination specified?There are up to a maximum of 2 entries that cover all variations.
How many letters are in the longest word on this page?The biggest word that's possible to derive from this list is 'zymotoxic', and it contains 9 characters.
In Scrabble, what's the most points you can get from words starting with 'z' that contain 'oxi'?As there is only a handful of words possible, your only feasible word is 'zootoxin' which scores 24 points.