immobile

immobile
    adj 1: not capable of movement or of being moved [ant: {mobile}]
    2: securely fixed in place; "the post was still firm after being
       hit by the car" [syn: {fast}, {firm}, {immobile}]
    

Immobile \Im*mo"bile\, a. [L. immobilis: cf. F. immobile. See
   {Immobility}.]
   Incapable of being moved; immovable; fixed; stable. --Prof.
   Shedd.
   [1913 Webster] immobilisation
    

83 Moby Thesaurus words for "immobile":
      abiding, adamant, adamantine, at a standstill, at anchor,
      changeless, constant, contemplative, continuing, dead-still,
      do-nothing, dormant, durable, enduring, firm, fixed, frozen, idle,
      immotile, immotive, immovable, immutable, inactive, inert,
      inflexible, intact, inviolate, irremovable, laissez-aller,
      laissez-faire, lasting, meditative, motionless, moveless, neuter,
      neutral, out of commission, paralytic, paralyzed, passive, pat,
      permanent, perpetual, persistent, procrastinating, quiescent,
      quietist, quietistic, remaining, riding at anchor, rigid, solid,
      stable, stagnant, stagnating, standpat, static, stationary,
      statuelike, staying, steadfast, still, stock-still, sustained,
      torpid, unaltered, unchangeable, unchanged, unchanging, unchecked,
      undestroyed, unemployed, unfading, unfailing, unmovable, unmoved,
      unmoving, unshifting, unvaried, unvarying, unyielding, vegetable,
      vegetative