The quality or state of being cloddish; stupidity, dullness, or boorishness in behavior or character.
From 'cloddish' plus the noun-forming suffix '-ness'. This creates an abstract noun describing the characteristic or quality of being cloddish, combining clod + -ish + -ness.
Medieval English could layer insults impressively—'cloddishness' doesn't just mean stupidity, it means the specific kind of boring, lumpish, agricultural stupidity that marked someone as low-class and uncivilized!
Complete word intelligence in one call. Free tier — 50 lookups/day.