From the TWL, (the Scrabble dictionary):
bethorn
botcher
bouncer
brother
burthen
butcher
chorten
chuffer
chunter
churner
coffret
confute
cornute
cothurn
counter
courter
couther
crofter
current
forerun
fortune
fronter
frother
frounce
functor
further
futhorc
horrent
norther
notcher
recount
refront
retouch
toucher
troffer
trounce
turnoff
Using all 7 letters you get rewords
Seven letter words that can be made from those letters are shutter and stretch.
Sinkage is the seven letter word formed using the letters aeigkns.
essayed
wavered
Settees
sellout
demotic
deleads
There are no seven letter words from these letters.
No 7 letter words there. 5 letters is the best you can do: arena or anear
Seven letter words that can be made from those letters are:amnesiapumpkin