Moderate to difficult list
During the actual bee, words not on this list will also be used.
abacus
abalone
abapical
aberrant
abeyance
abscess
abscissa
abstruse
abutment
abysmally
acaulescent
accede
accelerate
accessible
acclivity
accolade
accrescent
accrual
accumbent
acerose
acicular
acquiescent
acrimonious
aculeate
adventitious
aeneous
affidavit
agape
agglutinate
agouti
aiguille
aleatory
alliaceous
alluvium
alopecia
amblyopia
ameliorate
amenable
anagogic
ancillary
annihilate
anodyne
apocope
aqueduct
arenaceous
argillaceous
assiduously
asthmatic
atrichia
avocado
babesiosis
baccarat
baculiform
bagatelle
bailiff
balletomane
balustrade
banausic
barbell
barracuda
bathymeter
béchamel
benignant
bifurcate
birling
bizarre
bludgeon
botuliform
bouillabaisse
bourgeoisie
brochure
buccaneer
bulbous
cache
calliope
caparison
capricious
cartilage
catachresis
caterpillar
cavil
cetology
chartreuse
circinnate
cnemial
colloquy
colossal
connubial
conscientious
consensus
consuetude
contumely
convertible
coquetry
corroborate
coup
crescive
croquet
cruciferous
culinary
cynegetics
cynosure
daffodil
dasymeter
decaffeinate
dehiscence
delitescent
denouement
depilatory
desiccate
deterrence
dichotomy
diocese
diphthong
diptych
discrepancy
dissipated
divagate
docent
docility
dumbbell
duvet
dysphoria
ebullient
echelon
edacious
edifice
effervescent
egregious
eidetic
eleemosynary
embarrassment
empyrean
entente
entomologist
entrepreneur
escargot
eviscerate
exigency
exiguous
extemporaneous
extirpate
facilitator
fallibility
feign
ferruminate
fissile
flocculent
fluorescent
fortieth
fossorial
frangible
furlough
gangrene
garrulous
gauche
gendarme
geodesy
germane
gesticulate
giraffe
gracility
grallatorial
grievous
grimace
guidon
hallucination
harangue
hegemony
herbaceous
hermeneutics
herpetology
heuristic
hircine
homily
horripilation
humectant
hyetology
hyperbole
idiosyncratic
idyllic
ileitis
immalleable
immiscible
impasse
implausible
impugn
incessant
incorrigible
indigenous
innocuity
insessorial
insouciant
interlocutor
interregnum
inveigh
irascible
irrelevant
isagoge
isosceles
isthmus
jocosity
jussive
kaleidoscope
katabatic
kestrel
kielbasa
knoll
labyrinth
laccate
lachrymose
lackadaisical
lichen
lieu
liquefiable
liturgical
loathsome
loricate
maelstrom
magnanimous
malediction
malleable
marcescent
menagerie
mercenary
meringue
mezzanine
millennium
minacious
misogynistic
mnemonic
molasses
moraine
mostaccioli
musciform
napalm
nefarious
nephelometer
nescient
nimiety
nuchal
nyctalopia
obdurate
obeisance
obloquy
obsequious
ochlophobia
olfactory
onomastics
onychosis
opaque
oppugn
opulent
orifice
orison
oscillatory
ottoman
pachyderm
pageantry
panache
panegyric
parallel
paroxysm
pastiche
peccant
peirastic
peremptory
perennial
persiflage
pertinacious
pestilence
pharaoh
pinnacle
pirouette
pneumatic
poignant
porcelain
potpourri
prevaricate
propinquity
prosciutto
psilosis
ptomaine
pulchritude
pultaceous
pusillanimous
quandary
querimonious
quinquennial
ramellose
rapport
ratatouille
recalcitrant
refocillate
rescind
resipiscence
resuscitate
ricochet
rococo
rotisserie
rutilant
saccade
saggital
sangfroid
sassafras
sauerbraten
sciatica
sciolistic
sebaceous
seiche
sepulchral
serrated
shadiness
siccative
siege
siffilate
silhouette
sillographer
sinecure
solecism
soliloquy
sorcerer
souvenir
spinnaker
squeamish
stalwart
stanniferous
stertorous
stochastic
stupefy
styptic
suasible
succulent
suggestible
supercilious
surfeit
surveillance
susurration
symbiosis
syringe
taciturn
tautology
terraqueous
testaceous
thalassic
thaumatology
therapeutic
threshold
thurible
tinnient
tonsillitis
truttaceous
unctuous
unintelligible
velleity
vicissitude
wantonness
xerosis
xyster
zucchini