Part of speech: Verb
make defenseless
Part of speech: Verb
to hold fast or prevent from moving
Example: The child was pinned under the fallen tree
Part of speech: Verb
hold as reserve or withdraw from circulation
Example: of capital
Part of speech: Verb
cause to be unable to move
Example: The sudden storm immobilized the traffic
Part of speech: Verb
prohibit the conversion or use of (assets)
Example: Blocked funds; Freeze the assets of this hostile government
Part of speech: Verb
convert (assets) into fixed capital
The word "immobilise" comes from French immobiliser.
French spelling conventions explain many of English's 'silent letters' and irregular spellings.