disenchant
balk
fail
betray
mock
flat out
deflate
let down
improbatory
disquietive
disapprobative
disappointedly
faithless
rest
disapprobatory
unsweet
thumb down
disheartenment
begeck
misplease
best pleased
dispraisingly
underimpress
dissatisfy
unsatisfy
blast
demoralising
rain on someone's parade
piss on someone's bonfire
dispiritment
dischuffed
piss in someone's cornflakes
unsurprisingness
sorrow
put off
frustrate
disbowel
distribute
displeased
deprecative
unapprehensiveness
discontent
sycophancy
disapprovingly
obviativity
eesh
negative
ungrudgingness
discredit
take on the chin