There has been a few requests from different folks to provide a list of the tough words. Also there were a few requests on some of the word games like scrabble related word tips. I ventured into finding more about the second aspect. Wow the power of blog! to use the limited time i had i made a quick search on what the game owners provide and use it as the first list while doing the rest of the research. So here is the list and you can get the complete list and details from Here.

Words that include at least 66% vowels in order of length:

aa naoi aculei aucuba easies iodine
ae obia adagio audile eelier iodise
ai oboe adieus audios eerier iodize
oe odea adieux augite eidola iodous
ogee aecial auntie ekuele iolite
eau ohia aecium aurate elodea ionium
olea aedile aureus eluate ionize
aeon oleo aedine aurora eluvia ionone
aero olio aeneus aurous emeute koodoo
agee ooze aeonic ausubo eolian kookie
agio ouzo aerate auteur eonian lamiae
ague quai aerial autoed eosine laurae
aide raia aeried avenue epizoa league
ajee roue aerier aviate epopee liaise
akee toea aeries bailee equate looies
alae unai aerobe bailie equine louies
alee unau aerugo bateau etoile mealie
aloe urea agapae baubee eupnea meanie
amia uvea agapai beanie eureka mediae
amie zoea agorae beebee euripi meinie
anoa agouti booboo exodoi meoued
aqua aalii aikido boogie exuvia miaous
area adieu aiolis boohoo faerie milieu
aria aecia airier bookie faunae moirai
asea aerie alexia bootee feirie muumuu
aura aioli alodia bootie feriae nausea
auto aquae alulae boubou flooie obelia
awee areae amadou bougie foodie ocreae
beau audio amebae bureau footie odious
ciao aurae amoeba caeoma foveae oedema
ease aurei amusia caique galeae oeuvre
eaux cooee anemia coatee gateau oidium
eave eerie anomie codeia gaiour oilier
eide looie anopia coocoo goalie oleate
emeu louie anoxia cooeed goatee oleine
epee miaou anuria cooees goodie oolite
etui oidia aortae cookie gooier oomiac
euro oorie aoudad coolie goonie oomiak
idea ourie apiece cootie guaiac oorali
ilea queue apnoea coteau guinea oozier
ilia uraei apogee coulee heaume opaque
inia zoeae areola curiae hoagie opiate
iota areole daimio hoodie opioid
ixia aaliis ariose dautie hoolie oreide
jiao abasia ariosi dearie hoopoe oriole
lieu abulia arioso doolee hoopoo oroide
luau acacia arouse doolie iguana otiose
meou acajou ataxia doozie iodate ourari
moue acedia aubade easier iodide ourebi
outage reseau urania yautia areolae oogonia
outate roadeo urease zaikai aureate ouabain
outeat roadie uredia zouave aureola ouguiya
outlie rookie ureide aureole rouleau
outsee roomie uremia aboulia aurorae sequoia
outvie soiree utopia acequia couteau taeniae
peerie souari uveous aecidia epinaoi uraemia
peewee teepee uvulae aeneous eucaine
pereia teniae veepee aeolian eugenia aboideau
quaere tibiae voodoo aeonian eulogia aboiteau
qualia toupee weenie aerobia eupnoea aureolae
queued ubique weepie alienee evacuee eopoeia
queuer unciae weewee amoebae exuviae eulogiae
queues unease wienie anaemia ipomoea
quinoa unique woodie aquaria miaoued
rediae uraeus woolie aqueous nouveau

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All tournament players make it a high priority to learn these 16 Q-words that don’t use a U:
FAQIR - Variation of FAKIR, a Hindu ascetic.
FAQIRS - Plural of FAQIR.
QAID - A variation of CAID, a Muslim leader.
QAIDS - Plural of QAID.
QANAT - A system of underground tunnels and wells in the Middle East.
QANATS - Plural of QANAT.
QAT - Variation of KAT, an evergreen shrub.
QATS - Plural of QAT.
QINDAR - Variation of QINTAR, a monetary unit of Albania.
QINDARS - Plural of QINDAR.
QINDARKA - Albanian currency.
QINDARKAS - The plural of QINDARKA.
QINTAR - See above.
QINTARS - Plural of QINTAR.
QOPH - A letter of the Hebrew alphabet.
QOPHS - Plural of QOPH.
QWERTY - A standard typewriter keyboard.
QWERTYS - The plural of QWERTY, see above.
SHEQEL - An ancient unit of weight and money.
SHEQALIM - The plural of SHEQEL, see above
TRANQ - A variation of TRANK (i.e. tranquilizer).
TRANQS - Plural of TRANQ.
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Other useful LISTS ARE compiled in the hasbro website.