anaudia
aphasia
aphonia
asininity
blockishness
boobishness
boorishness
bovinity
brevity
briefness
brusqueness
cloddishness
conciseness
crassness
crudeness
curtness
deaf-muteness
denseness
density
dim-wittedness
dimness
doltishness
dull-wittedness
dullardism
dullness
duncery
economy of words
grossness
hebetude
inarticulateness
laconicalness
laconism
lethargy
loutishness
lumpishness
muteness
mutism
ninnyism
oafdom
oafishness
obmutescence
obtuseness
opacity
pauciloquy
quietness
quietude
shortness
silence
stupidity
deaf
deaf and dumb
deafness
dumb
dumb-show
gesture
language
mime
mimic
mute
oral
oral language
sign language
speak
speech
speechless
vocal
vocalize
aurium
blankness
coryza
encephalopathy
giddiness
good-fellowship
guilelessness
impotency
lovableness
obduracy
ponderousness
scatology
semi-consciousness
sightlessness
sogginess
speechlessness
tonot
unawareness
ursine
verbosity
weak-mindedness
widowerhood
woodenness