The quality or state of being consonant; the degree to which something is harmonious or in agreement.
From consonant plus -ness (Old English -nis). Formed to denote the abstract quality of consonance or agreement.
Philosophers debated the 'consonantness' of competing theories for centuries—basically asking which explanations of reality sounded best together, like instruments in an orchestra!
Complete word intelligence in one call. Free tier — 50 lookups/day.