Why “dissentience” is a great word
The state or quality of being dissentient; a condition of disagreement or dissent. Formed within English from the adjective 'dissentient' (from Latin dissentient-, dissentiēns, present participle of dissentīre, 'to differ in sentiment') and the noun-forming suffix '-ence'. Unlike "dissent," which connotes an act of vocal opposition, or "concord," which sings of harmonious unity, "dissentience" names the persistent, structural condition of being the one who thinks apart. It is the steady, low hum in the council chamber after the vote is called, the particular silence of a family dinner where one chair sits conspicuously empty, and the way a handshake can tighten just enough to betray a lie—the ambient radiation of minds that have diverged and will not, perhaps cannot, reconvene.
Definitions & examples from Wiktionary (CC BY-SA 3.0).