adamant
unyielding, a very hard substance
adroit
clever, resourceful
antic
clownish
arcadian
serene
baleful
deadly
bellicose
quarrelsome
bilious
unpleasant
boorish
crude, insensitive
calamitous
disastrous
caustic
corrosive, sarcastic
cerulean
sky blue
comely
attractive
contumacious
rebellious
corpulent
obese
effulgent
brilliantly radiant
equanimous
even, balanced, calm
friable
brittle
garrulous
talkative, wordy
guileless
naive
histrionic
theatrical
hubristic
proud, over-confident
insiduous
subtle, treacherous
intransigent
uncompromising
inveterate
persistent, habitual
inviduous
resentful, envious
puerile
childish, silly
jocular
jesting, playful
judicious
discreet
lachrymose
tearful
limpid
simple, transparent, serene
loquacious
talkative
mannered
artificial
mendacious
deceptive
minatory
menacing
munificent
lavish, generous
nefarious
wicked
noxious
harmful, corrupting
obtuse
blunt, stupid
parsimonious
frugal, restrained
pendulous
indecisive
petulant
rude
puckish
impish (from Shakespeare?)
querulous
whining, cranky
quiescent
inactive, dormant
rebarbative
irritating
recalcitant
resistant
redolant
aromatic
risible
laughable
ruminative
contemplatative
sagacious
wise
salubrious
healthful
trenchant
sharp, penetrating
turgid
swollen, pompous
ubiquitous
persuasive
verdant
green, unripe
voracious
ravenous
wheedling
flattering
withering
devastating
zealous
eager, devoted