Synonyms of dumbness

2 Syllables
sciolism, slowness
3 Syllables
soundlessness, brainlessness, doltishness, stupidness, foolishness, muteness, speechlessness, nescience, mindlessness, simpleness, dopiness, denseness, laconism
4 Syllables
noiselessness, slow-wittedness, unconsciousness, ignorance, obliviousness, philistinism, half-knowledge
5 Syllables
saturninity, illiteracies, incomprehension, unawareness, empty-headedness, illiteracy, unscholarliness
6 Syllables
unfamiliarities, unfamiliarity
7 Syllables
inarticulateness