Why this word is great
SONSIGN — [Noun] In Gilles Deleuze's cinematic philosophy, a pure sound that exists independently of any immediate action or narrative progression. Derived from sonic (relating to sound) + sign (a meaningful unit), it is the auditory equivalent of a ghost—present but untethered. Unlike "diegetic sound" (which anchors us to the film's world) or "opsign" (which arrests the eye in pure visuality), the sonsign is a vibration that lingers, untethered. It is the hum of a refrigerator in an empty apartment long after the scene has ended, the distant train whistle heard through a closed window in a film with no trains, or the low-frequency drone of a city at night when all dialogue has ceased—sound as a presence, not a signal, reminding us that silence is never truly silent.