According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 10 words with the pattern -UE---R. That is, seven letter words with 2nd letter U and 3rd letter E and 7th letter R. In alphabetical order, they are:
dueller
fuehrer
fueller
guesser
queerer
queller
querier
quester
questor
suetier