There is no single English word that meets the critera without repeating letters. Here are the options if you repeat letters.
acceded, accidia, accidie, aecidia, alcaide, alcalde, alidade, allelic, caddice, caddied, cadelle, calicle, cedilla, cicadae, daddled, dallied, decadal, decided, deicide, dialled, diallel, diddled, icicled
There's no seven letter word, here are the possible six letter words:atonernatronnonartornatetannertonner
A seven letter word from the letters in 'appliance' is pelican.
6-letter word: sneeze7-letter word: sneezed
Pendant.
Dandles
detract
That's vicious.
You cannot make any seven letter words with these letters. The longest word you can make is auto.
'VALANCE'
Ruction.
magnify enlarge
clothes