pretend
feign
sham
dissemble
affect
string along
put one's money where one's mouth is
leg-pulling
leg-pull
lie
believingly
buy
lead astray
betray
duplicity
deceive
double-dealing
convincing
authentic
reliable
trust everybody, but cut the cards
misbelieve
see through
credit
assume
face facts
disillusion
disillusionment
pigeon
reillusion
disenchantment
take someone at their word
pretense
dissembling
pretence
truthen
carry conviction
delude
feigning
presuppose
doxastic logic
suppose
profession
have someone going
professedly
make belief
take
probative
take someone's word for it
presumptive