According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 54 words with the pattern ---IST. That is, six letter words with 4th letter I and 5th letter S and 6th letter T. In alphabetical order, they are:
ageist
aorist
artist
assist
aurist
autist
bemist
bonist
breist
codist
cubist
cueist
delist
demist
desist
egoist
enlist
holist
hylist
insist
jurist
laxist
legist
lutist
lyrist
malist
modist
monist
nudist
oboist
oecist
oikist
papist
purist
quoist
racist
rapist
relist
resist
sadist
schist
sexist
sizist
tanist
tapist
theist
thrist
timist
tubist
typist
unwist
uprist
verist
vibist
Some seven letter words with the configuration "PR-N--N" are:prenoonpronoun
Some seven letter words with the configuration "PR--O-N: are:prenoonpronoun
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 2 words with the pattern IA-----. That is, seven letter words with 1st letter I and 2nd letter A. In alphabetical order, they are: iambics iambist
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 1 words with the pattern A-A---I. That is, seven letter words with 1st letter A and 3rd letter A and 7th letter I. In alphabetical order, they are: acanthi
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 1 words with the pattern I-I--I-. That is, seven letter words with 1st letter I and 3rd letter I and 6th letter I. In alphabetical order, they are: idiotic
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 1 words with the pattern A--I--I. That is, seven letter words with 1st letter A and 4th letter I and 7th letter I. In alphabetical order, they are: anziani
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 1 words with the pattern I-A--A-. That is, seven letter words with 1st letter I and 3rd letter A and 6th letter A. In alphabetical order, they are: inangas
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 1 words with the pattern A-----F. That is, seven letter words with 1st letter A and 7th letter F. In alphabetical order, they are: approof
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 1 words with the pattern I-----F. That is, seven letter words with 1st letter I and 7th letter F. In alphabetical order, they are: infeoff
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 1 words with the pattern I-IA---. That is, seven letter words with 1st letter I and 3rd letter I and 4th letter A. In alphabetical order, they are: iliacus
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 2 words with the pattern I---A-A. That is, seven letter words with 1st letter I and 5th letter A and 7th letter A. In alphabetical order, they are: ikebana intrada
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 2 words with the pattern A-AA---. That is, seven letter words with 1st letter A and 3rd letter A and 4th letter A. In alphabetical order, they are: araaras ataatas