I need a string pattern that matches words lying between a lower word lW and an upper word uW. Ordering is the standard lexical (alphabetic) order.

The following pattern does the job, but takes a long time if a large word base is used. Actually, I need the pattern for DictionaryLookup in natural languages.

Block[{lW = "Zyniker", uW = "Zypresse"},
 StringMatchQ[{"zylindrisch", "zynisch", "Zypern", "Zyste"}, 
  w__ /; AlphabeticOrder[lW, w, IgnoreCase -> True] == 1 && 
    AlphabeticOrder[w, uW, IgnoreCase -> True] == 1]
 ]
{False, True, True, False}

Is there some more elegant and fast pattern?