early 15c., from Old French immobilité (14c.) and directly from Latin immobilitatem (nominative immobilitas) "immovableness," noun of quality from Latin immobilis "immovable" (see immobile).
Entries linking to immobility
immobile adj.
mid-14c., originally of property; by c. 1400 "steadfast, unmovable" (of faith, etc.), from Old French immoble "immovable, fixed, motionless" (13c., Modern French immeuble), from Latin immobilis "immovable" (also, figuratively, "hard-hearted"), from assimilated form of in- "not, opposite of" (see in- (1)) + mobilis (see mobile (adj.)). Related: Immobilism "policy of extreme conservatism" (1853).