not that I know of
I don't suppose
rhetorical question
who cares
yeah, no
doubtingly
doubtfully
no means no
who knows
non constat
how should I know
don't-know
if anything
me neither
plead the Fifth
no
so what
dubitative
erotesis
but hey
nope
aporetic
nonanswer
that's for me to know and you to find out
aporetical
as if
I don't understand
huh
unsubstantiate
do not want
well
I have a question
mixed signal
hedger
tergiversator
nonreply
suspensory
fudge
equivocator
too
nonresponse
responselessness
unrepliable
ask me one on sport
doubting
I'm confused
unclarity
it is and it isn't
venture
guess
blur
stopper
yes and no
conversation stopper
hazard
O ye of little faith
pretend
dubiously
nonanswerable
a dumb priest never got a parish
no clue
guess what
scarcely
hardly
scarce
barely
alleged
nosuh
negatively
I just work here
unh-uh
unreplied
go fish
unclearly
yes way
heroic assumption
pray tell
none of your beeswax
you wish
answerlessness
confusion
mump
don't quote me
I'm worried
umlessness
umbrage
redoubt
vacuity
twithought
unsurely
dull
questioningly
contradictingly
I'm scared
ambiguously
what someone said
if I may be so bold
hay is for horses