Earns, ebony, eking and emend are 5 letter words. Additional words include evens, event and eying.
The first one that comes to mind is four; others are:anusaquablueblurboutchugchumclubcluecoupcrudcruxdaubdourdrugdrumfaunfauxfluxfoulglueglumglutgoutgrubhaulhourlaudloudloutmaulnounonusopusovumplugplumpluspoufpourpoutroutscumshunshutslugslumslursmugsmutsnubsnugsoulsoupsourspudtautthudthugthustourtrueyour
Lake HURONSome words that have O as the second to last letter are:actorarborardorbloombroomcolordroopgloomgroomheronfloorfurormajormayormelonmoronmotorproofrumorsalonshootspoontumorvalorvaporwhoop
geeseorderpriorteaseceaseleasedryerpeacepastaversemottosalsaparkanerveservetersekarmastartstintstiltaddedaidedmergeledgehedgesergewedgecallagammamannaseizeteaseerrorrodeopoliofencetensedensepencepandamambasambapapaw
Eleven letter words with second letter U, last letter R are:bullfighterbushwhackerquicksilverrumormongersupertankersurfboarder
Some six letter words with the second letter U and the last letter E are:auntiebubblebucklebudgiebungleburglebustlebutanecuddlecurarecurdlecuttlefuddlefumblefutilefuturegurgleguzzlehuddlehumanehumblehurdlehurtlehustlejugglejujubejumblejunglejunkielupinelustremuddlemufflemumblemusclemutatemuzzlenuancenubilenuzzleoutagepuddlepumicepurplepursuepuzzlequichequincerubblerufflerumblerumplerustlesubduesubtlesucklesundaesupinesupplesuturetubuletumbleturtletusslevulvaeyuppie
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The answer to this riddle is the letter "L." "First of first" refers to the first letter of the word "first," which is F. "Second of you" refers to the second letter of the word "you," which is O. "Double of you" gives us the letter U (double the letter O). Finally, "First of last" refers to the first letter of the word "last," which is L.
The first one that comes to mind is four; others are:anusaquablueblurboutchugchumclubcluecoupcrudcruxdaubdourdrugdrumfaunfauxfluxfoulglueglumglutgoutgrubhaulhourlaudloudloutmaulnounonusopusovumplugplumpluspoufpourpoutroutscumshunshutslugslumslursmugsmutsnubsnugsoulsoupsourspudtautthudthugthustourtrueyour
Lake HURONSome words that have O as the second to last letter are:actorarborardorbloombroomcolordroopgloomgroomheronfloorfurormajormayormelonmoronmotorproofrumorsalonshootspoontumorvalorvaporwhoop
BiggerBetterHigher
already
geeseorderpriorteaseceaseleasedryerpeacepastaversemottosalsaparkanerveservetersekarmastartstintstiltaddedaidedmergeledgehedgesergewedgecallagammamannaseizeteaseerrorrodeopoliofencetensedensepencepandamambasambapapaw
Eleven letter words with second letter U, last letter R are:bullfighterbushwhackerquicksilverrumormongersupertankersurfboarder
Some six letter words with the second letter U and the last letter E are:auntiebubblebucklebudgiebungleburglebustlebutanecuddlecurarecurdlecuttlefuddlefumblefutilefuturegurgleguzzlehuddlehumanehumblehurdlehurtlehustlejugglejujubejumblejunglejunkielupinelustremuddlemufflemumblemusclemutatemuzzlenuancenubilenuzzleoutagepuddlepumicepurplepursuepuzzlequichequincerubblerufflerumblerumplerustlesubduesubtlesucklesundaesupinesupplesuturetubuletumbleturtletusslevulvaeyuppie
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Four letter words with the same first and last letter are:areaariaaquaaurabarbblabblobbulbchicdeaddeeddieddyedeaseeaveedgeelsefiefganggonggroghashhighhushkickkooklolllullmaimneonnoonnounoleoontoOreoorzoouzopeeppimpploppomppoopprepproppulppumprearroarsanssasssoustacttartteattauttenttesttextthattilttintToottorttouttrottufttwitwhew