U1N1U1T1T1E1R1A1B3L1E1
13 points
UNUTTERABLE is validvalid
not utterable [adj] : UNUTTERABLY [adv]
that cannot be uttered, also INUTTERABLE [adj UNUTTERABLY] / something that cannot be uttered [n -S]
not utterable [adj] : UNUTTERABLY [adv]
that cannot be uttered, also INUTTERABLE [adj UNUTTERABLY] / something that cannot be uttered [n -S]