baffle
baffled
bemuse
bemused
bewilder
bewildered
chagrin
chagrined
clueless
confound
confounded
confuse
confused
disaffection
disappointed
disappointment
discombobulate
discombobulated
discontent
disenchanted
disenchantment
disillusion
disillusioned
disillusionment
displeasure
dissatisfaction
faze
fazed
flummox
flummoxed
frustration
grudge
mystified
mystify
nonplussed
perplex
perplexed
stumped
upset