With the requirement of an 8-letter word:

Reading ...
   length 8: 37514
   length 7: 31449
   length 6: 22043
   length 5: 12337
   length 4: 5826
   length 3: 1892
   length 2: 398
   length 1: 26
Extending 7 ...
Preparing ...
Prepared 33552
Sorting ...
   670 aeilnrst entrails
   666 aeilprst pilaster
   661 adeinrst detrains
   651 adeilrst dilaters
   651 aeinprst pantries
   634 adeilnor irondale
   631 aeinorst arsonite
   626 aeginrst angriest
   623 aeilmrst lamister
   619 aeimnrst merantis
   618 adeilnrs islander
   615 aeloprst petrosal
   614 adeiprst rapidest
   607 aenoprst operants
   605 aelnorst lonestar
   598 adegilnr dearling
   597 acenorst ancestor
   595 aceinrst canister
   594 abeilrst abristle
   593 aeilorst realitos
670 aeilnrst
8 entrails
7 aliners alister anestri anilest antlers antsier elastin entrail latiner latrine
6 airest aliner altern alters aniler antler antres ariels arisen ariste arline
5 aesir airns airts aisle aisne alert alien aline alist alsen alter anile anise
4 ains aire airn airt aits alit alts anes anil ansi ante anti ares aret aril aris
3 ail ain air ait ale ali alt ane ani ans are art asl ate ats ean ear eat ela eli
2 ae ai al an ar at ea el en er et ia ie il in ir it la le li ln lr lt na ne ni
1 a e i l n r s