List of Challenging Character Trait Words
Here is a list of mostly challenging character trait words in alphabetical order.

able-bodied
adoring
adventurous
ambitious
argumentative
arrogant
articulate
bashful
beautiful
bellicose
belligerent
bewildered
boastful
bright
brilliant
calculating
calm
cantankerous
cautious
classy
clever
compassionate
complacent
confident
conniving
conscientious
considerate
cooperative
cordial
courageous
cunning
curious
dainty
daring
dashing
dastardly
deceitful
decent
deceptive
defiant
delicate
determined
devious
devout
disagreeable
dreaded
dubious
duplicitous
dutiful
eager	efficient
eloquent
emphatic
encouraging
energetic
enterprising
enthusiastic
errant
expressive
extroverted
exuberant
facetious
faithful
fatigued
felicitous
flippant
forceful
forgiving
forthright
fortitudinous
fortunate
frustrated
garish
generous
gentle
giddy
glamorous
good-natured
gorgeous
graceful
gracious
grateful
gregarious
gullible
handsome
handy
hardy
harsh
helpful
homely
honest
honorable
hopeful
hospitable
hostile
humble
imaginative
immoral
impartial
imperial	impish
impulsive
indecisive
independent
intelligent
intolerant
intrepid
intriguing
introspective
introverted
inventive
jaded
jealous
jolly
jovial
jubilant
judgmental
just
juvenile
keen
kingly
knavish
knightly
knowledgeable
lackadaisical
lavish
lazy
lecherous
legendary
lethargic
lewd
liberal
lovable
loyal
malevolent
malicious
manipulative
materialistic
matronly
meek
melancholy
meritorious
meticulous
mischievous
monstrous
moronic
morose
munificent
narcissistic
naïve	nervous
neurotic
neutral
noble
nonchalant
nostalgic
nubile
nurturing
obese
obnoxious
obsequious
obsessed
obtuse
opinionated
optimistic
opulent
ornery
ostentatious
partisan
passive
patient
patriotic
penitent
perceptive
perfectionist
personable
pessimistic
pitiful
playful
pleasant
pompous
proud
prudent
punctilious
punctual
quaint
quarrelsome
quiet
quirky
quizzical
rambunctious
rancorous
rash
rational
reasonable
rebellious
reserved
resilient
respectful
responsible	reverent
rigid
rotund
rowdy
ruthless
saintly
sensible
sensitive
serious
shallow
sheepish
shrewd
sinister
slovenly
sociable
spontaneous
stately
staunch
stealthy
stern
strict
stubborn
studious
tenacious
terrifying
thoughtful
thrifty
timid
tolerant
treacherous
treasonous
truculent
trusting
uncouth
understanding
unfortunate
unscrupulous
unwise
vain
vehement
vengeful
versatile
vindictive
wasteful
willful
wise
xenophobic
youthful
zealous