inconcussible
In`con*cus"si*ble, a. Etym: [Pref. in- not + L. concussibilis that can be shaken. See Concussion.] Defn: Not concussible; that cannot be shaken.
In`con*cus"si*ble, a. Etym: [Pref. in- not + L. concussibilis that can be shaken. See Concussion.] Defn: Not concussible; that cannot be shaken.