No, but normally you do have to use all the letters!
The anagram for "words" is "sword." (they use the same letters)
There is not anagram for BOSTON using all of the letter. There are words that can be made with those letters:booboonboostbootbosonnonobnotonontosnootsnotsosobsonsoonsootsottotontoo
swordSword is the anagram for words.
Anagram. :)
Anagram
There is no anagram for the word vouched using all of the letters. Some other words that can be made with those letters are:codcodecoedcovecudcuedodoedouchedoveduoechoedhehohodhoehueodeouchohuhvouch
You could always use an anagram solver, to find the possible words that can be formed. The anagram solver has found:3 letter words:ChiHicIchJib2 letter words:BiHi
Kramer is an anagram of the words marker and remark.
A single-word anagram of the words tense crow is sweetcorn.
There are a number of anagram solver websites that use mixed letters to make real letters. You can find them with a Google search for "anagram Solver".
There are no word in English that use all five of those letters. There are several three letter words that can be made with 'eowyn', for example:eonnewnowoneowewoewonwonyenyewyonyow
The following words can be made:Mayflower (this is a full anagram - using all the letters)FloweryFlamerFormalLawyerMoraleWarmlyEarlyFlameFlareFlyerFoamyFoyerLayerLeafyLowerMayorMolarRealmRoyalWaferWeary