the lights are on but nobody's home
non-responder
nonresponder
unfathoming
impersonal
unsentient
blind
responselessness
nonresponsive
make nothing of
catch no ball
unpersuading
a dumb priest never got a parish
have someone there
underreact
misgrasp
nonplussed
pull the other one, it's got bells on
do me a lemon
uncoping
non possumus
numb
underrespond
nonresponding
dissatisfy
stunned
firm
nice guys finish last
unapprehending
unperceptiveness
plead the Fifth
deaf
noncooperator
disfavour
nonconform
incompliable
inconsistency
miss the point
disattention
deafening silence
at loggerheads
tubelight
unmovable
reluctant dragon
mismeeting
nonreactor
stonewalling
unacknowledging
uncooperation
unsympathizing
underresponsive
unenlightenment
insensible
absence
misreact
indiscernible
undetectable
loss of consciousness
anticommunication
dissonant
nontolerance
nonresponse
weak-mindedly
inattentiveness
misappreciative
befuddlement
mystification
nonreceptive
puzzlement
obfuscation
misplease
unresponding
spitelessness
bewilderment
non-rational
bemusement
dippy
simpleton
heedlessness
go in one ear and out the other
blockish
bafflement
unassimilating
fucking hell
nonrealization
stuff it
insensibility
inconstancy
confuddled
you snooze you lose
peccancy
go over like a lead balloon
answerlessness
misfit
uninterest
noncomprehender
stonewall
nonunison
nonreply
antisocial