IPA: /ɪˈmoʊbəl/
KK: /ɪˈmoʊbəl/
Not able to move or be moved; fixed in place.
After the accident, he remained immobile on the ground until help arrived.
Immobile is formed from "in-" (meaning not) and "mobilis" (meaning movable or capable of movement). The word describes something that is not capable of movement or is fixed in place.
Think of 'not' ('in-') being able to move ('mobilis') — that's why immobile means unable to move.