The longest is advertisement. There are thousands more.
you need n d n n s n n s n n = nothing s = stick d = diamond
U i d n v s h e
M A D N E S Smad, sad, mean, sane, same, mass, sea, as, am, an, man, mess.
Some five letter words from the letters in documents are:centscodescoedscomescometconescount
you can make tan or ass
land spat
Words that can be made with the letters I I D N V H S E are:dendiedindinediveendhehenhihidhidehiehindhivehisIidinissidesinsine
18
Twins
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 1 words with the pattern D-N-N-S. That is, seven letter words with 1st letter D and 3rd letter N and 5th letter N and 7th letter S. In alphabetical order, they are: donings
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 1 words with the pattern -N-D-N-S-. That is, nine letter words with 2nd letter N and 4th letter D and 6th letter N and 8th letter S. In alphabetical order, they are: snideness
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 1 words with the pattern -D-N-N-S. That is, eight letter words with 2nd letter D and 4th letter N and 6th letter N and 8th letter S. In alphabetical order, they are: adenines
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 1 words with the pattern D-S-D--N. That is, eight letter words with 1st letter D and 3rd letter S and 5th letter D and 8th letter N. In alphabetical order, they are: disadorn
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 2 words with the pattern D-N-N--S. That is, eight letter words with 1st letter D and 3rd letter N and 5th letter N and 8th letter S. In alphabetical order, they are: dankness doneness
Inside.
Inions and iodins are the two longest words; some others are:dindodonIidininnionisnonodonsinsosodson