There is no seven-letter word in the English language using those letters.
Some seven letter words that can be made with those letters are:preceptprefectprofusepurposerefocusrefutesrespectscepterspecterstepperstoppersupport
6-letter word: sneeze7-letter word: sneezed
You can make one seven lettered word from these letters which is nirvana.
There are no seven letter English words that can be made from the letters 'asdhtdr', but you can make these words:aadaddahartasashatdaddartdashdrathahadhardhashatradrahrashratsadsatshshadshardstartatadtartrashtsar
You can make several seven letter words with these letters. They include:AcetoneCheapenCheetahHatchet
You can make several seven letter words with the letters 'pladiamhceuc'. They include:AcclaimCalciumChaliceClaimedClampedHelipadMedical
You can make several seven letter words with the letters 'terudesasdez'. They are:AddressAssuredDearestDessertDressedSaddestSteeredTeasersTreaded
You cannot make any seven letter words with these letters. The longest word you can make is auto.
gambols
amusing
dogears
'VALANCE'
Ruction.
A seven letter word from the letters in 'appliance' is pelican.
Special.
You cannot make any words with seven letters using these letters. The longest word you can make is honda.