{PLEASEHELP} (10 letters) minus {sleep} is {ahelp} (5 letters).
25 words loaded (4096 byte block). Longest kept: 5 letters. List of candidate words: 0. ALE 1. LEA 2. ALP 3. APE 4. EPA 5. PAL 6. HAE 7. PEA 8. HAP 9. LAP 10. LEP 11. PAH 12. HEP 13. LAH 14. HEAL 15. PALE 16. LEAP 17. HEAP 18. HELP 19. EPHA 20. PELA 21. HALE 22. PEAL 23. PLEA 24. ALEPH
Anagram Helper © 2012 by B. Elijah Griffin
Candidate word lists produced with Wordplay by Evans A Criswell