What are some exceptional isograms, polygrams, pyramid words, etc.?

language/english/spelling/letter.count Restored

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Problem

What are some exceptional isograms, polygrams, pyramid words, etc.?

Show solution

  longest isogram  DERMATOGLYPHICS (15)
   pair of words  BLACKSMITH GUNPOWDERY (20)
   three words  HUMPBACKS, FROWZY, TINGLED (22)
  longest pair isogram (L14,128,1-201,4-136,142,5-25,111,205,6-13,212,7-33,
   15-136,16-156,219,18-140) SCINTILLESCENT 
  longest trio isogram  DEEDED (6)
  longest tetrad isogram  KUKUKUKU (8)
  longest polygram (all letters repeated)  UNPROSPEROUSNESSES (18)
  longest pyramid word  REMEMBERER (10)
  highest ratio length/letters  KUKUKUKU (4) SENSELESSNESSES (3.75)