The anagrams are enlist, inlets, listen, silent, and tinsel.
There are about 60 shorter words including islet, lines, stein, and stile.
These are the words that I can spell with breakfast:Aabaftabetabreastafaraftafterareareaarkartasaskasteratatebaabakebarbarebarkbasebaskbastebatbatebeakbeastbeatbedbetbrakebratbreakeareasteatfafakefarfarefastfatfatefearfeastfeatfreakfretraberaftrakesabresafesakesateseasearseatstabstakestarstaresteakstreak
13
The letters NEPKEUFVDOUBGNUCN can spell 254 English words. The longest are :denounceconvenedbeckonedunopenedconvenedungeonbuncoedboundenpouncedbouncedunbound
12
a hundred
Words created from the letters in cooperation [noitarepooc] might be:aceactactionapeareatartcarecopcooncoopcrapicenicenitnopenotnotepactparepatpearpitpotpricetareteartontonetoretrapLetters: cooperation [noitarepooc]
There are no full anagrams of the word "beautiful".Words that you can spell using some of the letters are:FibulaAlbeitFutileBleatBuiltFableFaultFluteTableBailBateBeauBileBiteBlueFailFateFileFlatFleaLateLeafLeftLifeLiftTailTaleTileTubaTube
deer
2
superitussitspitsupsuitsuitsspitsitssitspursepursespriestprieststutortutorspressupupsetupsetsstopstopsstepstepsripripsstripstripstourtourstouristtourists
see,
All of them.